Questions and answers

A 1/4 in collet in your spindle's or router's own system. In ER11, the catalogs we read stop at 7 mm or 1/4 in, so 1/4 in is the top size. A 6 mm collet is not a 1/4 in collet: 1/4 in is 6.35 mm. More in Collets and collet nuts: ER11, ER16, ER20 and router collets

Not in the catalogs we read. Galaxy and Command Tool list ER16 up to 10 mm, Command Tool's largest inch ER16 is 0.375 in, and Somma lists ER16 to 13/32 in, all below 1/2 in (12.7 mm). ER20 reaches 1/2 in. More in Collets and collet nuts: ER11, ER16, ER20 and router collets

No. PreciseBits lists standard ER20 nuts with an M25 x 1.5 thread and ER20 mini nuts with an M24 x 1.0 thread, so a nut labeled only 'ER20' does not tell you which spindle it fits. More in Collets and collet nuts: ER11, ER16, ER20 and router collets

Treat router collets as model-specific. Elaire lists its standard DeWalt collets for the DW616, DW618 and DW621, not the DWP611, which it directs to a separate series. Buy the collet whose maker names your router model. More in Collets and collet nuts: ER11, ER16, ER20 and router collets

No source we found sets one for hobby routers. Compare claims only when the makers state the same measuring method, such as PreciseBits' readings at the collet face and 1 inch down a blank. More in Collet runout claims: TIR, measuring points and what studies show

Research on industrial and micro milling links runout to unequal tooth load and wear, but we found no controlled study of hobby wood routing. A precision collet is a maker's claim you can check on your own machine. More in Collet runout claims: TIR, measuring points and what studies show

PreciseBits recommends a dial test indicator on a smooth calibration blank, read at the collet face and at least 0.80 inch (20.3 mm) out. Do it with the power disconnected. More in Collet runout claims: TIR, measuring points and what studies show

The claims may not be measured the same way. REGO-FIX and Haas publish a TIR figure without stating where it is measured, while PreciseBits states two measuring points. More in Collet runout claims: TIR, measuring points and what studies show

No. PreciseBits lists standard ER20 nuts at M25 x 1.5 and mini ER20 nuts at M24 x 1.0. A nut labeled only ER20 does not tell you which spindle thread it fits. More in ER collet nuts: standard vs mini threads, and finding yours

A mini ER16 nut. Carbide 3D's 65 mm ER16 spindle uses an ER16M nut with an M19 thread, which matches the M19 x 1.0 thread PreciseBits lists for ER16 mini nuts. More in ER collet nuts: standard vs mini threads, and finding yours

REGO-FIX recommends tightening its nuts with a torque wrench and publishes torque values separately. PreciseBits cautions that its torque values may not always be required, preferable or even possible, and treats maximum torque as a warning. Follow your spindle maker's instructions. More in ER collet nuts: standard vs mini threads, and finding yours

Carbide 3D explains that the off-center lip inside an ER nut traps the collet so it leaves the spindle taper with the nut. More in ER collet nuts: standard vs mini threads, and finding yours

About 1/4 inch. Galaxy, Command Tool and Somma all stop at 7.0 mm, and Command Tool's largest inch ER11 collet clamps 0.231-0.250 inch. More in ER11 collet sizes and the 1/4 inch limit

For practical purposes, yes. PreciseBits gives an ER11 collet's clamping range as 0.020 inch (0.5 mm), and Somma states .019 inch for its ER11 collets. More in ER11 collet sizes and the 1/4 inch limit

The one that matches its nose thread. PreciseBits lists standard ER11 nuts at M14 x 0.75 and mini ER11 nuts at M13 x 0.75; check your spindle maker's documentation for which one it uses. More in ER11 collet sizes and the 1/4 inch limit

No. A 1/4 inch shank is 6.35 mm, 0.35 mm larger than 6 mm. Use the 1/4 inch collet. More in ER11 collet sizes and the 1/4 inch limit

Among those we have sources for, Carbide 3D's ER-11 Compact Router and Sienci's AutoSpin both use ER11 collets and list 1/4 inch as the largest shank. More in ER11 collet sizes and the 1/4 inch limit

Yes, at the top of its range. The ER11 catalogs checked stop at 7.0 mm, about 1/4 inch, and Command Tool's largest inch ER11 collet clamps 0.231-0.250 inch. More in ER11 vs ER16 vs ER20: which shanks each collet system holds

No. A 1/2 inch shank is 12.7 mm, outside the ER16 ranges Galaxy, Command Tool and Somma publish. You need ER20 or larger. More in ER11 vs ER16 vs ER20: which shanks each collet system holds

No. A 1/4 inch shank is 6.35 mm, 0.35 mm larger than 6 mm, and REGO-FIX says never to clamp a shank larger than the collet's nominal size. Use a 1/4 inch collet. More in ER11 vs ER16 vs ER20: which shanks each collet system holds

It names the collet series size, not the bit. Carbide 3D says the number after ER denotes the size; ER20 collets in the catalogs checked hold shanks up to 13 mm or 1/2 inch. More in ER11 vs ER16 vs ER20: which shanks each collet system holds

No. The spindle nose and nut are made for one series, so the spindle decides the system. Check the spindle maker's documentation for its collet series. More in ER11 vs ER16 vs ER20: which shanks each collet system holds

An ER20 collet made for 1/2 inch, such as Command Tool's ER20-F500 (0.461-0.500 inch) or Haas 04-1180. ER16 does not reach 1/2 inch in any catalog checked. More in ER20 collets for 1/2 inch bits: sizes, makers and spindle limits

Follow the collet maker's stated range. Galaxy and Command Tool list a 12.0-13.0 mm ER20 collet, and 1/2 inch is 12.7 mm, but a collet made for 1/2 inch is the direct match; if the range on the label does not include 12.7 mm, do not use it. More in ER20 collets for 1/2 inch bits: sizes, makers and spindle limits

The spindle maker and the bit maker decide that, not the collet. OSHA advises labeling tools and holders with their maximum permissible speed and never running them faster. More in ER20 collets for 1/2 inch bits: sizes, makers and spindle limits

No. PreciseBits lists standard ER20 nuts at M25 x 1.5 and mini ER20 nuts at M24 x 1.0, so the label ER20 alone does not tell you which spindle a nut fits. More in ER20 collets for 1/2 inch bits: sizes, makers and spindle limits

REGO-FIX advises inserting the tool over the full collet length where possible and never less than two-thirds of the collet length. More in Seating an ER collet and bit: what the makers say

It was probably not snapped into the nut's retention lip. Carbide 3D says the off-center lip traps the collet so it leaves the taper with the nut, and that the collet must be snapped in before the tool goes in. More in Seating an ER collet and bit: what the makers say

No. REGO-FIX advises never clamping a shank larger than the collet's nominal size and using the next larger collet instead. More in Seating an ER collet and bit: what the makers say

We give no torque figure. REGO-FIX recommends a torque wrench and publishes its values; PreciseBits cautions that its torque values are not always required or possible. Follow your spindle maker's instructions. More in Seating an ER collet and bit: what the makers say

CCOHS router guidance says to disconnect the power supply before making any adjustments or changing bits. More in Seating an ER collet and bit: what the makers say

DeWalt lists the DWP611 with a 1/4 inch collet. Elaire sells aftermarket DWP-series collets in sizes including 1/8 inch, but it does not say DeWalt approves sizes other than 1/4 inch. More in Makita RT0701C and DeWalt DWP611 collets, nuts and wrenches

No, according to Elaire. Its standard DeWalt collets are listed for the DW616, DW618 and DW621, and it directs DWP611 owners to its separate DWP series. More in Makita RT0701C and DeWalt DWP611 collets, nuts and wrenches

For PreciseBits' DeWalt 611 parts, yes: its DEPG-0611-NUT and Talon wrench work only with PreciseBits collets, not the stock collet. Check each maker's notes for its own parts. More in Makita RT0701C and DeWalt DWP611 collets, nuts and wrenches

Makita lists the RT0701C's included 1/4 inch collet as part 763637-1, supplied with two spanner wrenches, 781039-9 and 781011-1. More in Makita RT0701C and DeWalt DWP611 collets, nuts and wrenches

No. Carbide 3D says its precision collets fit only the Carbide Compact Router, not its ER-11 Compact Router or its VFD spindles. More in Makita RT0701C and DeWalt DWP611 collets, nuts and wrenches

Buy the sizes you run. A set suits a shop with mixed bits; a single collet suits one shank size. Haas, for example, sells a single ER20 1/2 in collet (04-1180) with a 0.500-0.461 in range. More in ER collet sets and single collets with the range stated

No. A 1/4 in shank is 6.35 mm, larger than 6 mm, and REGO-FIX advises against clamping a shank larger than the collet's nominal size. More in ER collet sets and single collets with the range stated

None is in our approved catalog yet. If your spindle is ER16, buy ER16 collets: an ER11 or ER20 collet will not fit its nose. More in ER collet sets and single collets with the range stated

The spindle or kit maker states it. Onefinity's 65 mm 1.5 kW Redline kit, for example, ships with an ER11 nut and its 80 mm kits with an ER20 nut. More in Collet system finder

No. The number names the collet size; the ER11 catalogs we read stop at 7 mm or 1/4 in. More in Collet system finder

Only if its maker says so. Carbide 3D says its precision collets fit only the Carbide Compact Router, not its ER-11 Compact Router or VFD spindles. More in Collet system finder

Carbide 3D says its Sweepy 2.0 works with any Shapeoko Z axis without adapters. Pick the collar for the installed motor: 65 mm for the Carbide Compact Router, VFD kit or Makita trim routers, 69 mm for the DeWalt trim router, 80 mm for the 80 mm VFD kit. More in Dust boots and shoes: mount diameter, hose port and machine fit

The one its port takes, by inside and outside diameter. Sweepy 2.0 fits a 2.5-inch shop-vac hose and includes 2.25-inch and 36 mm adapters; Genmitsu's DS-series shoes have a 32 mm inner and 38 mm outer port; the PwnBoot has a 4-inch intake with a 4-to-2.5-inch reducer. More in Dust boots and shoes: mount diameter, hose port and machine fit

No source we read guarantees that for any boot. OSHA says the primary way to control wood dust is local exhaust ventilation that captures it at or near the source; a boot is one part of that, not proof of protection. More in Dust boots and shoes: mount diameter, hose port and machine fit

No. Carbide 3D sells Sweepy 2.0 in 65 mm for Makita-class routers and spindles and in 69 mm for the DeWalt trim router. Look for a boot whose maker names the DeWalt. More in Will a dust boot fit? Mount diameter, machine and Z travel

No. Onefinity says the Suckit SM fits 80 mm spindles only and will not work with 65 mm spindles or the Makita router. More in Will a dust boot fit? Mount diameter, machine and Z travel

Usually, if the body diameter changes. Sweepy 2.0, for example, comes in separate 65, 69 and 80 mm versions, and Carbide 3D's 80 mm spindle kit includes its own 80 mm Sweepy 2.0. More in Will a dust boot fit? Mount diameter, machine and Z travel

No. Genmitsu says the DS69 is not compatible with 52 mm spindles; it sells the DS52 for those. More in Will a dust boot fit? Mount diameter, machine and Z travel

Onefinity states that the Suck It it sells works only with the Onefinity CNC. More in Will a dust boot fit? Mount diameter, machine and Z travel

OSHA lists dermatitis, allergic and nonallergic respiratory effects and cancer among health effects associated with wood dust, and notes nasal cancer linked to certain hardwoods especially at high exposures. NIOSH considers both hardwood and softwood dust potentially carcinogenic. The sources we cite do not single out MDF. More in CNC router dust: what OSHA and NIOSH say about wood dust

No source we found gives that guarantee for any hobby dust boot. OSHA names local exhaust at or near the source as the primary control, which is what a boot connected to a collector attempts, but no boot is rated for exposure. More in CNC router dust: what OSHA and NIOSH say about wood dust

According to NIOSH, the 1989 OSHA wood dust limits were remanded by a federal appeals court and are not currently in force. More in CNC router dust: what OSHA and NIOSH say about wood dust

NIOSH HC6 (1996) describes a Jet Stripper system on industrial automated routers that it says reduced airborne dust exposure by 90%. That was a specific industrial system, not a rating for any hobby dust boot. More in CNC router dust: what OSHA and NIOSH say about wood dust

It fits some directly. Carbide 3D says Sweepy 2.0 takes a 2.5 inch shop-vac hose as standard, and KentCNC says its Mini's 2-1/2 inch connector fits most shop vacs. Other boots need a reducer, and port labels are nominal, so check the actual inside and outside diameters. More in Dust-boot hose ports, adapters and brush rings

Carbide 3D does not recommend 35 mm hoses with its 80 mm VFD spindle because they can clog, but it names no recommended size. Follow your boot maker's port size. More in Dust-boot hose ports, adapters and brush rings

From the boot maker. PwnCNC sells brush by the inch and publishes lengths per boot and diameter; Onefinity ships the Suckit SM with 30 mm and 50 mm brush rings; KentCNC offers optional ring sizes. More in Dust-boot hose ports, adapters and brush rings

Onefinity calls it a 2.5 inch port, but lists it as 67.60 mm (2.66 in) outside and 57.93 mm (2.28 in) inside. Treat 2.5 inch as a nominal label. More in Dust-boot hose ports, adapters and brush rings

No; none is in our approved catalog yet. Carbide 3D's Sweepy 2.0, Onefinity's Suckit SM and PwnCNC's PwnBoot all come in or are made for 80 mm, but they are not approved. More in Dust boots with the mount diameter and hose port stated

Only if your hose or adapter matches. Genmitsu gives a 32 mm inner and 38 mm outer diameter for its DS-series ports; compare both numbers with your hose end. More in Dust boots with the mount diameter and hose port stated

No source we read guarantees that. OSHA names local exhaust ventilation at the source as the primary control for wood dust; a shoe is the capture point, not a health guarantee. More in Dust boots with the mount diameter and hose port stated

The part's maker names your machine and Z version, and its size matches what you measured. Carbide 3D says its 65 mm VFD kit is not compatible with machines other than its Shapeokos, and FoxAlien says its Z clamp is not compatible with the XE-Ultra. More in Before you buy: identify the machine, measure the mount, check the seller

No. OSHA states that the CE mark is unrelated to the requirements for product safety in the United States. Look for a recognized certification mark on the exact model; see the electrical marks guide. More in Before you buy: identify the machine, measure the mount, check the seller

Check the brand's own list of stores. FoxAlien names Amazon, AliExpress and Walmart as its authorized brand stores; DeWalt says it does not sell tools directly online and points to authorized retailers. More in Before you buy: identify the machine, measure the mount, check the seller

Often. CBP says duty-free de minimis treatment is suspended for goods valued at $800 or less by all modes. CBSA says postal imports over CAN$20 pay duty and taxes on the full value. More in Before you buy: identify the machine, measure the mount, check the seller

Only the brand can say. FoxAlien names AliExpress among its authorized brand stores. MICROJIG's retailer list and POWERTEC's named channels do not include AliExpress, and POWERTEC says other sites claiming to sell its products are not affiliated with it. More in Buying CNC spindles and accessories on Amazon or AliExpress: what to check

We found no evidence it is. The site says it takes part in the Amazon Associates program, does not say it makes Huanyang drives and names no operating company. More in Buying CNC spindles and accessories on Amazon or AliExpress: what to check

Read the 'Ships from' and 'Sold by' lines for the offer you are about to buy. Amazon describes Brand Stores as self-service storefronts for showcasing a brand's products; the seller of each offer is shown on those two lines, so read them every time. More in Buying CNC spindles and accessories on Amazon or AliExpress: what to check

Not necessarily. Genmitsu sells its V2 water-cooled kit in regional variants, while the page states only a 110 V/60 Hz input. Confirm the exact variant's supply before you order. More in Buying CNC spindles and accessories on Amazon or AliExpress: what to check

In the US, the duty-free de minimis treatment for goods valued at $800 or less is suspended, so plan for duty. In Canada, postal imports over CAN$20 pay duty and taxes on the full value, and courier or broker fees come on top. More in Returns and import costs for CNC parts in the US and Canada

Only under the seller's terms, unless the listing shows the Free Returns icon in a covered country. For Mainland China sellers, Free Returns allow 90 days from the order date, in original condition with all accessories and packaging, once per order. More in Returns and import costs for CNC parts in the US and Canada

It depends on where you bought. FoxAlien's direct store charges the customer unless FoxAlien made the error, and SainSmart's direct store makes customers responsible for return shipping. Amazon Canada says options depend on location, seller, item and reason. More in Returns and import costs for CNC parts in the US and Canada

CBSA can refund duties and taxes on qualifying personal imports returned to a seller outside Canada, but not brokerage fees or shipping and handling. More in Returns and import costs for CNC parts in the US and Canada

Check your order record and the maker's parts list for the Z name (for example Onefinity's Z-16 or Z-20, or Carbide 3D's belt-driven Z, HDZ or Z-Plus). Onefinity sells separate 80 mm mounts for the Z-16 and the Gen 2 Z-20, so the slider name decides the part. More in Identify your CNC machine and Z axis before buying parts

Only if the part's maker names your machine. Carbide 3D's 80 mm Spindle Mount, for example, fits the Shapeoko 5 Pro and will not fit other Shapeoko machines. More in Identify your CNC machine and Z axis before buying parts

Start with what is on the machine now: the motor, its body diameter and the mount. Then compare those with the maker's current lists. Older Shapeoko 3 controllers (V2.3 or older, shipped before November 2019) need Carbide 3D's updated board for its 65 mm VFD kit. More in Identify your CNC machine and Z axis before buying parts

Inventables' Upgrades collection listed the Z Axis Kit, the Belt and Motor Kit and the Makita Spindle Mount as sold out when viewed on 2026-10-11. The page makes no discontinuation statement. More in Identify your CNC machine and Z axis before buying parts

No. FoxAlien states its standard 65 and 69 mm Z clamp is not compatible with the XE-Ultra. More in Identify your CNC machine and Z axis before buying parts

Not in the US or Canada. OSHA states that the CE mark is unrelated to US product-safety requirements, and Health Canada advises not to buy plug-in products without a mark such as CSA, cUL or cETL. More in UL, ETL, CSA and CE marks on spindle kits and VFDs

In Canada, Health Canada says plug-in electrical products must be certified by an accredited body. In US workplaces, OSHA lists electrical equipment among products needing NRTL approval under some conditions. A drive standard such as IEC 61800-5-1 exists, but its existence does not certify any drive. More in UL, ETL, CSA and CE marks on spindle kits and VFDs

Find the mark on the product itself, note the exact model, and look it up in Intertek's ETL Listed Mark directory. Intertek says the directory shows products it has tested and certified. More in UL, ETL, CSA and CE marks on spindle kits and VFDs

No. UL says the Recognized Component mark covers parts meant to be built into a larger UL Listed product, not a complete standalone product. More in UL, ETL, CSA and CE marks on spindle kits and VFDs

Measure the router or spindle body and note the Z axis and table thread, then buy only parts whose maker names your machine. The measuring guide and the mount size finder help. More in CNC part finder by machine and Z axis

Because no maker page, guide or support answer we read states it. We leave it blank rather than fill it from a reseller listing. More in CNC part finder by machine and Z axis

Because fit changes with the Z axis. Onefinity sells one 80 mm mount for its original Z-16 slider and another for Gen 2 Elite machines with the Z-20, and each excludes the other. More in CNC part finder by machine and Z axis

A 65 mm one. FoxAlien sells its 65 mm Z clamp for routers like the RT0701C, and Sienci says the standard LongMill MK2 mount has a 65 mm bore and the RT0700/RT0701 is the router it has thoroughly tested on it. More in Router and spindle mounts: 52, 65, 69, 71 and 80 mm, and what your Z takes

Both labels are in use. FoxAlien and Carbide 3D call their DWP611 holders and boots 69 mm, while Sienci lists its 71 mm LongMill mount for the DWP611. Buy the holder whose maker names the DWP611 and your machine; the DWP611 mount guide explains. More in Router and spindle mounts: 52, 65, 69, 71 and 80 mm, and what your Z takes

Only with a part its maker documents. PwnCNC sells 80-to-65 mm reducing shims and says its shims were designed primarily around PwnCNC spindle mounts. No source we read offers a universal ring. More in Router and spindle mounts: 52, 65, 69, 71 and 80 mm, and what your Z takes

No. Carbide 3D says its 80 mm mount for the Shapeoko 5 Pro will not fit other Shapeokos, Onefinity sells separate 80 mm mounts for the Z-16 and the Gen 2 Z-20, and PwnCNC says machines other than its Dominator need a machine-specific adapter plate. More in Router and spindle mounts: 52, 65, 69, 71 and 80 mm, and what your Z takes

65 mm. FoxAlien sells its 65 mm Z clamp for routers like the RT0701C, and Sienci's standard 65 mm LongMill mount is the one it tested with the RT0700/RT0701. More in 65 vs 69 vs 71 vs 80 mm mounts: which bodies each one holds

No. A bore cannot grip a larger body. Only the other direction is possible, a smaller body in a larger bore, and only with a reducing ring its maker makes for that pair. More in 65 vs 69 vs 71 vs 80 mm mounts: which bodies each one holds

FoxAlien calls its DeWalt DWP611 clamp 69 mm, while Sienci lists its DWP611 mount as 71 mm. Neither source explains the difference, so buy the holder whose maker names your router. More in 65 vs 69 vs 71 vs 80 mm mounts: which bodies each one holds

Not by itself, but makers often pair them. PwnCNC pairs its 65 mm mount with ER11 motors and its 80 mm mount with ER20 motors. Check the spindle's own collet listing. More in 65 vs 69 vs 71 vs 80 mm mounts: which bodies each one holds

Not with Carbide 3D's parts. Its 80 mm kit lists the Shapeoko 5 Pro as the only supported machine, and its 80 mm mount will not fit other Shapeokos. More in 80 mm spindle mount upgrades by machine and Z version

SKU 1z1680mmspindlemount fits the original Z-16 slider; SKU z2080mmmountGen2 fits Gen 2 Elite machines with the Z-20. Each excludes the other's machines and wall-mounted machines. More in 80 mm spindle mount upgrades by machine and Z version

No. Sienci states its 71 mm and 80 mm LongMill mounts will not work with the MK2 dust shoe. More in 80 mm spindle mount upgrades by machine and Z version

No boot maker in our sources says so. Boots are sold per diameter; Onefinity's Suckit SM, for example, fits 80 mm spindles only. More in 80 mm spindle mount upgrades by machine and Z version

Both labels are in use. FoxAlien and Carbide 3D sell 69 mm parts for it, and Sienci sells a 71 mm LongMill mount for it. Buy the part whose maker names the DWP611 for your machine. More in DeWalt DWP611: 69 mm or 71 mm mount?

Only if the boot maker says so. None of the sources we checked makes that claim, so ask the boot maker first. More in DeWalt DWP611: 69 mm or 71 mm mount?

Not on the DWP611 page we read. It lists the router as 1-1/4 HP MAX, 7 amps and corded, but no body diameter. More in DeWalt DWP611: 69 mm or 71 mm mount?

Our source is Carbide 3D's May 2021 announcement for the Shapeoko Pro, Shapeoko 4 and HDZ (V4.0). It says nothing about current availability, so check Carbide 3D's store. More in DeWalt DWP611: 69 mm or 71 mm mount?

On the plain round band the mount clamps onto, not the motor cap, vent ring or base. Take two or three readings, turning the motor between them. More in How to measure a router or spindle body for a mount

Measure again on a clean band, then compare with the size the motor's maker and the mount's maker state. We found no published fit tolerance, so if it still sits between sizes, ask the mount maker before ordering. More in How to measure a router or spindle body for a mount

For Sienci's AutoSpin, Sienci says so: it gives the body as 64.8 mm and says it fits 65 mm router mounts. That is Sienci's statement about its own spindle, not a rule for other motors. More in How to measure a router or spindle body for a mount

Multiply by 25.4: one inch is exactly 25.4 mm. The result is a calculation, not proof that a metric mount fits. More in How to measure a router or spindle body for a mount

Only with a reducing ring or shim made for that pair, seated evenly. PwnCNC sells an 80 to 65 mm shim, designed primarily around its own mounts. More in Spindle mount adapter rings, shims and adapter plates

No. A ring only steps a larger bore down; nothing makes a bore grip a larger body. You need an 80 mm mount made for your machine. More in Spindle mount adapter rings, shims and adapter plates

A ring changes what the mount holds; a plate changes how the mount bolts to the machine. PwnCNC's mount needs a machine-specific plate on machines other than its Dominator CNCs. More in Spindle mount adapter rings, shims and adapter plates

PwnCNC says its shims were designed primarily around PwnCNC mounts and must sit evenly without overlapping a split, bolt or internal obstruction. For another brand's mount, ask both makers first. More in Spindle mount adapter rings, shims and adapter plates

Do not assume so. Genmitsu names its own machines, and Shapeoko and Onefinity mounts are made per Z axis: Carbide 3D says its Shapeoko 5 Pro 80 mm mount fits no other Shapeoko, and Onefinity sells separate mounts for the Z-16 and the Gen 2 Z-20. More in Spindle and router mounts with a stated bore and machine list

None is in our approved catalog. Sienci offers its LongMill mount in 71 mm for the DWP611 and Bosch Colt, but it is not approved yet. More in Spindle and router mounts with a stated bore and machine list

Only if a ring's maker names both sizes and the mount. PwnCNC, for example, makes its mount in 65 or 80 mm and says machines other than its Dominator need a machine-specific adapter plate. More in Spindle and router mounts with a stated bore and machine list

Neither yet. Check the router or spindle maker's stated body size and buy a holder whose maker names that model. The measuring guide shows where to measure. More in Router and spindle mount size finder

Because makers label it both ways: FoxAlien and Carbide 3D call their DWP611 parts 69 mm, Sienci lists its 71 mm mount for it. We show both and do not average them. More in Router and spindle mount size finder

Only a ring or shim whose maker documents it. PwnCNC sells 80-to-65 mm shims and says they were designed primarily around its own mounts. More in Router and spindle mount size finder

Not for every kit. Carbide 3D's 65 mm VFD kit is 110 V only, and Onefinity's 1.5 kW Redline kits are 110 V; Onefinity's 2.2 kW Redline and PwnCNC's 2.2 kW kits are 220 V. Follow the kit maker's manual and have a qualified electrician decide on the circuit. More in Spindle kits: body size, collet system, cooling and the maker's supply rules

One whose maker names your machine and Z axis. Carbide 3D says its 65 mm kit should fit the Shapeoko 3, 4, Pro and 5 Pro and is not compatible with other machines, and its 80 mm kit guide lists the Shapeoko 5 Pro as the only supported machine. More in Spindle kits: body size, collet system, cooling and the maker's supply rules

It varies, so read the contents list. PwnCNC's water-cooled kits include a pump and tubing but no coolant or reservoir, and no finished VFD enclosure; its Spindle System adds a finished, programmed and tested enclosure. More in Spindle kits: body size, collet system, cooling and the maker's supply rules

That is not established. The only maker statement we found, from Sienci, says its AutoSpin spindle has no noise advantage over the Makita RT0701C at the same RPM. More in Spindle kits: body size, collet system, cooling and the maker's supply rules

Not the 65 mm kits we found. Carbide 3D's current 65 mm kit lists a 3/8 in maximum cutter, and a 1/2 in shank is outside the ER16 ranges Galaxy, Command Tool and Somma publish. For 1/2 in, look at ER20 spindles. More in 65 mm vs 80 mm spindles: collet, supply and what else changes

Not always. Onefinity sells an 80 mm 1.5 kW kit at 110 V and an 80 mm 2.2 kW kit at 220 V; Carbide 3D's 80 mm kit uses a 220 V VFD. Quote the kit you are looking at, and let an electrician confirm your circuit. More in 65 mm vs 80 mm spindles: collet, supply and what else changes

A mount your machine's maker names for 80 mm, an 80 mm dust boot, a hose that will not clog, and ER20 collets for every shank you run. Carbide 3D warns that 35 mm hoses can clog with its 80 mm spindle. More in 65 mm vs 80 mm spindles: collet, supply and what else changes

No. PwnCNC and Onefinity pair 65 mm with ER11, but Carbide 3D's 65 mm kit has used ER16 since May 2025. More in 65 mm vs 80 mm spindles: collet, supply and what else changes

It depends on the kit. PwnCNC's water kits include a 110 V pond pump and tubing but no coolant or reservoir; Carbide 3D's 80 mm kit includes a CW3000 chiller. More in Air-cooled vs water-cooled spindle kits: what each package includes

That is outside our scope. Follow the spindle maker's manual; Carbide 3D's 80 mm kit, for example, does not include coolant. More in Air-cooled vs water-cooled spindle kits: what each package includes

Not established. We found no source that measures noise for air-cooled vs water-cooled spindles. More in Air-cooled vs water-cooled spindle kits: what each package includes

No. PwnCNC says water-cooled spindles should not be operated without coolant flow. More in Air-cooled vs water-cooled spindle kits: what each package includes

The current kit (V2, from May 2025) takes ER16 collets with an ER16M nut; the earlier kit (V1) uses ER11 and shipped with a 1/4 in ER11 collet. Carbide 3D's precision collets fit neither. More in Carbide 3D 65 mm VFD spindle: ER11 (V1) vs ER16 (V2)

No. The V2 spindle is ER16; it ships with 1/8, 1/4 and 3/8 in ER16 collets and an ER16M nut with an M19 thread. More in Carbide 3D 65 mm VFD spindle: ER11 (V1) vs ER16 (V2)

Carbide 3D lists the Shapeoko 3, but does not recommend the kit with the original belt-driven Z, and machines with a V2.3 or older controller (shipped before November 2019) need its updated board. More in Carbide 3D 65 mm VFD spindle: ER11 (V1) vs ER16 (V2)

Carbide 3D lists a maximum cutter diameter of 3/8 in (10 mm) for the current 65 mm kit. More in Carbide 3D 65 mm VFD spindle: ER11 (V1) vs ER16 (V2)

Carbide 3D states it does not, and that the kit is 110 V only. Never remove a GFCI; ask a qualified electrician. More in Carbide 3D 65 mm VFD spindle: ER11 (V1) vs ER16 (V2)

No source we found establishes that. Compare what each kit documents: its supply and its collet system. In Onefinity's and PwnCNC's lines, 2.2 kW comes at 220 V. More in 110 V vs 220 V spindles, kW labels and what the maker requires

No. Buy a kit whose stated supply matches your circuit, and never change a plug or outlet to make a kit fit. A qualified electrician decides what your circuit can supply. More in 110 V vs 220 V spindles, kW labels and what the maker requires

Carbide 3D states its 65 mm kit does not work on a GFCI outlet, and Onefinity warns that a GFCI may false-trip with its VFD. Never remove the GFCI; ask a qualified electrician and the kit maker. More in 110 V vs 220 V spindles, kW labels and what the maker requires

Quote the kit maker. Onefinity says its Redline VFD requires a 15 A breaker; Carbide 3D's 65 mm guide calls for a 15 A minimum outlet. An electrician confirms your circuit. More in 110 V vs 220 V spindles, kW labels and what the maker requires

We do not convert them. Makita and DeWalt label their routers 1-1/4 HP maximum, and those maximum labels are not comparable with a spindle's kW rating. More in 110 V vs 220 V spindles, kW labels and what the maker requires

At PwnCNC, the system has the VFD installed in a finished enclosure, programmed for the motor and tested before shipment; the kit has no finished VFD enclosure. More in Spindle upgrade checklist: kit, system and the parts you still need

Often a mount or adapter plate for your machine, a boot for the new diameter, a hose, collets for every shank you run and, on the Shapeoko 5 Pro, an adapter cable. Read the kit's parts list to see which it already includes. More in Spindle upgrade checklist: kit, system and the parts you still need

Sometimes. Carbide 3D's 80 mm kit includes an 80 mm dovetail mount; PwnCNC's kit includes the mount only if you select it. More in Spindle upgrade checklist: kit, system and the parts you still need

Not the ones we checked. PwnCNC's water kits include a pump and tubing but no coolant or reservoir; Carbide 3D's 80 mm kit includes a chiller but no coolant. Follow the spindle maker's manual for coolant. More in Spindle upgrade checklist: kit, system and the parts you still need

Not established. The only source we found, Sienci, states its AutoSpin has no noise advantage over the Makita RT0701C at the same RPM. More in Keep the trim router or move to a spindle?

It depends on the kit. Carbide 3D's 65 mm kit is 110 V only, while Onefinity's 80 mm 2.2 kW kit is 220 V with a NEMA 6-15P plug. A qualified electrician confirms whether your circuit meets the maker's rule. More in Keep the trim router or move to a spindle?

Only if the kit maker names your machine and Z. Carbide 3D, for example, does not recommend its 65 mm spindle on a Shapeoko 3 with the original belt-driven Z because of the weight. More in Keep the trim router or move to a spindle?

Ask first. Sienci, for one, says it does not offer technical support for installing third-party spindles on the LongMill. More in Keep the trim router or move to a spindle?

Go by mount size, not popularity. A 65 mm mount takes the Makita RT0701C class (FoxAlien's 65 mm clamp names it, and Sienci's standard 65 mm LongMill mount was tested with the RT0700/RT0701); the DeWalt DWP611 goes in a holder its maker labels 69 or 71 mm. More in Trim routers for CNC: body size, stock collet and speed range

Only with a 1/8 in collet its maker or a collet maker lists for that router. Carbide 3D ships its Compact Router with a 1/4 and 1/8 in precision collet set, and its ER-11 Compact Router with 1/4 and 1/8 in ER11 collets; Makita lists the RT0701C with a 1/4 in collet. More in Trim routers for CNC: body size, stock collet and speed range

Not on the DeWalt page we read. It lists 27,000 rpm and a 1/4 in collet, but no low-end speed, so we cannot state a full range. More in Trim routers for CNC: body size, stock collet and speed range

Not established. Sienci says its AutoSpin spindle has no noise advantage over the Makita RT0701C at the same RPM. More in Trim routers for CNC: body size, stock collet and speed range

No. The Compact Router uses its 1/4 in factory collet and Carbide 3D's precision collets. Standard ER11 collets are for the ER-11 Compact Router. More in Carbide Compact Router vs ER-11 Compact Router: collets that fit

No. Carbide 3D says its precision collets fit only the Compact Router, not the ER-11 Compact Router or its VFD spindles. More in Carbide Compact Router vs ER-11 Compact Router: collets that fit

Carbide 3D sells the Sweepy 2.0 in a 65 mm version for the Carbide Compact Router. Its listing does not name the ER-11 model, so ask Carbide 3D for that one. More in Carbide Compact Router vs ER-11 Compact Router: collets that fit

Carbide 3D lists a 1/4 in maximum cutter shank for the ER-11 Compact Router. More in Carbide Compact Router vs ER-11 Compact Router: collets that fit

FoxAlien and Sienci pair the Makita RT0701C with 65 mm mounts, Carbide 3D gives its Compact Router a 65 mm body, and Sienci says its 64.8 mm AutoSpin fits 65 mm mounts. More in Trim routers for CNC: Makita RT0701C, DeWalt DWP611 and Carbide 3D

Only with a collet made for 1/8 in. Carbide 3D ships 1/8 in collets with both its Compact Router and its ER-11 Compact Router; the Makita RT0701C's listed collet is 1/4 in. More in Trim routers for CNC: Makita RT0701C, DeWalt DWP611 and Carbide 3D

Ask your machine's maker. Sienci, for example, says the Makita RT0700/RT0701 is the router it has thoroughly tested on the LongMill. More in Trim routers for CNC: Makita RT0701C, DeWalt DWP611 and Carbide 3D

DeWalt's page lists 27,000 rpm but no low-end speed, so we do not state a full range. More in Trim routers for CNC: Makita RT0701C, DeWalt DWP611 and Carbide 3D

Clamps whose maker lists M6 hardware. Genmitsu's low-profile toe clamp uses M6 screws and nuts and is listed for M6 spoilboards, hybrid tables and T-track, and Carbide 3D's Essential Clamps ship with M6 screws for its Hybrid Table. More in CNC workholding: clamps, T-track and threaded inserts by thread

Either works if the clamp hardware matches. Carbide 3D says its Essential Clamps can be used with 1/4-inch hardware on your own T-track or threaded inserts. Inserts give fixed points in an MDF board; track lets a bolt slide along a line. More in CNC workholding: clamps, T-track and threaded inserts by thread

Low-profile toe or side clamps that grip the edge leave the top face clear for the toolpath. Genmitsu's toe clamp is 15 mm tall; whatever you use, set the toolpath so the bit never reaches the clamp. More in CNC workholding: clamps, T-track and threaded inserts by thread

Long enough for the clamp and stock, short enough not to bottom out. Carbide 3D's Crush-It hardware kit gives M6 bolts from 16 to 40 mm, and Carbide 3D staff said 10 mm inserts work in place of 13 mm ones if every bolt is 3 mm longer. More in CNC workholding: clamps, T-track and threaded inserts by thread

None guarantees it. Low-profile and edge clamps sit lower or off the top face, but you still have to plan toolpaths around every clamp and check the clearance before you run the job. More in CNC hold-down clamps: top, toe, low-profile and stops

If you are carving the whole top face, a top clamp sits in the way, so edge or low-profile clamps make sense; Carbide 3D announced its Tiger Claw for setups where clamping the top face is not an option. For through-cuts and parts with spare margin, top clamps outside the cut area work. More in CNC hold-down clamps: top, toe, low-profile and stops

No maker claim we found says so, and you should not rely on it. Plan toolpaths so the bit never reaches any clamp. More in CNC hold-down clamps: top, toe, low-profile and stops

No. CCOHS advises never relying on yourself or a second person to hold the material being routed, and OSHA lists poorly fixed stock among causes of kickback. More in CNC hold-down clamps: top, toe, low-profile and stops

Carbide 3D says extra jaws come with the Crush-It Essential set but are not sold separately. More in CNC hold-down clamps: top, toe, low-profile and stops

Check the machine or table maker's documentation, or the hardware that came with it. Carbide 3D's Hybrid Table hardware is M6, and Onefinity said in 2021 that its QCW uses a 1/4-20 track. More in M6 vs 1/4-20 (and M8) spoilboard threads: which hardware fits

Only if each clamp gets bolts in the thread of the hole or track it goes into. A clamp body may accept either bolt (Carbide 3D says its Essential Clamps can be used with 1/4 inch hardware on your own track or inserts), but an M6 bolt and a 1/4-20 bolt are not interchangeable. More in M6 vs 1/4-20 (and M8) spoilboard threads: which hardware fits

Onefinity stated in an official October 2021 forum post that the QCW uses a 1/4-20 track and that a standard 1/4-20 bolt head fits. More in M6 vs 1/4-20 (and M8) spoilboard threads: which hardware fits

Not always. E-Z LOK lists drills per part number, and the same internal thread can need different drills in different insert families. Use the insert maker's chart. More in M6 vs 1/4-20 (and M8) spoilboard threads: which hardware fits

In some tracks. Rockler says its Universal T-Track's stacked slot accepts 1/4 inch hex bolts as well as 1/4 and 5/16 inch T-bolts. Other tracks need the bolt their maker names. More in T-track for CNC hold-downs: profile, bolts and miter track

No. POWERTEC's Standard Miter T-Track is designed for 3/4 x 3/8 inch T-bars, and its page lists no bolt slot, so treat it as a miter-bar track, not proof that clamp bolts fit. More in T-track for CNC hold-downs: profile, bolts and miter track

No track maker we found gives a spacing for CNC tables. Follow your machine or table maker's layout and plan it around the clamps and stock sizes you use. More in T-track for CNC hold-downs: profile, bolts and miter track

No. The head must fit the slot profile too. Rockler publishes the outside size of its Universal T-Track but not its slot dimensions, so stay with bolts the track maker lists. More in T-track for CNC hold-downs: profile, bolts and miter track

It depends on the insert. E-Z LOK lists its 900610 E-Z Hex insert for soft woods including MDF, with a 23/64 inch drill; Carbide 3D recommends a 9 mm pilot hole for its own M6 inserts. More in Threaded inserts for a CNC spoilboard: thread, wood and drill size

E-Z LOK matches the insert family to the wood: its brass E-Z Knife 400-M6 is for hard woods such as oak, cherry and maple, and its zinc-alloy E-Z Hex 900610-13 is for soft woods including MDF and plywood. More in Threaded inserts for a CNC spoilboard: thread, wood and drill size

Carbide 3D staff said 10 mm M6 inserts can replace 13 mm ones, but every bolt then needs to be 3 mm longer. More in Threaded inserts for a CNC spoilboard: thread, wood and drill size

We found none on the 900610-13 part page. We publish no holding-force figure. More in Threaded inserts for a CNC spoilboard: thread, wood and drill size

Not with 1/4-20 bolts in M6 holes: they are different threads. Carbide 3D lets you use 1/4-inch hardware with its Essential Clamps on your own T-track or inserts, which means changing the hardware, not mixing threads. More in CNC clamps, T-track and inserts with the thread stated

The one the insert's maker gives for that part. E-Z LOK lists 23/64 in for its M6 E-Z Hex inserts and 25/64 in for its M6 E-Z Knife; Carbide 3D recommends a 9 mm pilot hole for its own inserts. More in CNC clamps, T-track and inserts with the thread stated

Not yet; none is in our approved catalog. Carbide 3D's Essential Clamps ship with M6 screws for its Hybrid Table. More in CNC clamps, T-track and inserts with the thread stated

Carbide 3D says the kit should fit the Shapeoko 3, but it does not recommend it on the original belt-driven Z axis because of the spindle's weight, and it prefers the HDZ. Controllers V2.3 or older also need the updated Carbide Motion PCB. More in Carbide 3D Shapeoko 3

Carbide 3D says Crush-It clamps are not intended for the Shapeoko 3 because it has no Hybrid Table, but they can be used on a fixture plate with M6 holes. More in Carbide 3D Shapeoko 3

Sweepy 2.0. Carbide 3D says it works with any Shapeoko Z axis without adapters and sells it with 65, 69 and 80 mm collars, so choose the collar for the motor you run. More in Carbide 3D Shapeoko 3

No. Carbide 3D's 80 mm kit guide lists the Shapeoko 5 Pro as the only supported machine, and its standalone 80 mm mount will not fit other Shapeoko machines. More in Carbide 3D Shapeoko 4 and Shapeoko Pro

In May 2021 Carbide 3D announced a 69 mm spindle mount for DeWalt routers that works with the Shapeoko Pro, Shapeoko 4 and HDZ (V4.0). The announcement says nothing about current availability. More in Carbide 3D Shapeoko 4 and Shapeoko Pro

Carbide 3D's Crush-It Nutz 'n Bolts kit, listed for the Shapeoko 4 and Pro, uses M6 x 1.0 bolts in 16 to 40 mm lengths with Teez Nutz. More in Carbide 3D Shapeoko 4 and Shapeoko Pro

Only the Shapeoko 5 Pro. Carbide 3D's guide lists it as the only supported machine, and the standalone 80 mm mount will not fit other Shapeoko machines. More in Carbide 3D Shapeoko 5 Pro

Carbide 3D says the kit uses a 220 V VFD with an L6-20 plug, and its CW3000 chiller runs on a standard 110 V NEMA 5-15 outlet. The kit manual and a qualified electrician decide the circuit. More in Carbide 3D Shapeoko 5 Pro

Carbide 3D's guide says the 5 Pro needs an adapter cable between the kit's communications cable and the controller, and the mount is raised to the middle set of M6 holes. More in Carbide 3D Shapeoko 5 Pro

Onefinity lists SKU 1z1680mmspindlemount for the Z-16 original Z-slider on the Original, X-35 and X-50 machines. It is not compatible with Elite series or wall-mounted machines. More in Onefinity with the original Z-16 slider

A Onefinity reply says the original Suck It and Suck It Pro work with both 65 mm and 80 mm boots. Onefinity also says the Suck It works only with the Onefinity CNC. More in Onefinity with the original Z-16 slider

Onefinity's mount-size article says the Z-20 ships with a 65 or 80 mm mount preinstalled and that switching sizes later means buying a new Z-20 assembly. The Gen 2 80 mm mount excludes Gen 1 Elite machines. More in Onefinity Z-20 (Gen 1 and earlier)

The 65 mm 1.5 kW kit has an ER11 nut with 1/4 and 1/8 in collets. The 80 mm kits have an ER20 nut with 1/2, 3/8, 1/4 and 1/8 in collets. More in Onefinity Z-20 (Gen 1 and earlier)

Onefinity warns that GFCI installation may cause frequent false tripping and says the VFD requires a 15 A breaker. The kit manual and a qualified electrician decide the circuit; never remove GFCI protection. More in Onefinity Z-20 (Gen 1 and earlier)

Onefinity lists SKU z2080mmmountGen2 for Gen 2 Elite Woodworker, Journeyman and Foreman machines with the Z-20 slider. It excludes Original, X-35, X-50, Gen 1 Elite and wall-mounted machines. More in Onefinity Gen 2 Elite with the Z-20

No. Onefinity says the Suckit SM fits 80 mm spindles only and will not work with 65 mm spindles or the Makita router. More in Onefinity Gen 2 Elite with the Z-20

Onefinity lists the port at 67.60 mm (2.66 in) outside diameter and 57.93 mm (2.28 in) inside diameter. It also calls it a 2.5 in port, which is a nominal label. More in Onefinity Gen 2 Elite with the Z-20

Sienci says the standard LongMill MK2 router mount has a 65 mm bore. Sienci also sells LongMill mounts in 52, 71 and 80 mm. More in Sienci LongMill MK2

Sienci lists its 71 mm LongMill mount for the DeWalt DWP611 and Bosch Colt. That mount will not work with the MK2 dust shoe. More in Sienci LongMill MK2

No. Sienci states it does not offer technical support for installing third-party spindles on the LongMill. More in Sienci LongMill MK2

Inventables' legacy instructions mount a DeWalt 611 router in the spindle mount, secured with three M4 x 16 mm screws. They do not state the mount diameter. More in Inventables X-Carve (1000 mm, legacy)

Genmitsu says the 4040-PRO's Z carriage supports 65 or 69 mm motors with an extra mount, and lists its 101-63-ZC65 and ZC69 holders for the machine, with the Makita RT0700C and DeWalt DWP611 as examples. More in Genmitsu 4040-PRO

Genmitsu's product table lists 42 mm and 52 mm mounts, while SainSmart's setup article says the 52 mm mount has a sleeve for 44 mm motors. The two pages conflict, so measure your motor. More in Genmitsu 4040-PRO

Genmitsu matches its shoes to spindle diameter: DS3018 for 42 mm, DS52 for 52 mm and DS69 for 65-69 mm. All have a 32 mm inner and 38 mm outer port. More in Genmitsu 4040-PRO

Genmitsu lists a 710 W compact router supplied with ER11 collets, in a 65 mm spindle mount. More in Genmitsu 4040-PRO MAX

Genmitsu lists the 4040-PRO MAX as a control-signal-cable match for the V2 kit. That is a signal-interface list, not a mount or payload approval, and the V2 page does not say whether a holder is included. More in Genmitsu 4040-PRO MAX

Yes. Genmitsu says the PROVerXL 4030 V2 ships with an extra 65 mm spindle holder. More in Genmitsu PROVerXL 4030 V2

Genmitsu sells a 4030 V2 spindle holder in 69 mm (101-63-4030V2-ZC69) and 65 mm (101-63-PXL43V2-SMM65), also listed as compatible with the PROVerXL 4x4 Z axis. More in Genmitsu PROVerXL 4030 V2

SainSmart's setup article says the 65 mm mount moves the bit center 14.5 mm forward over the bed compared with the 52 mm mount, and uses six bolts in one position. More in Genmitsu PROVerXL 6050 Plus

Genmitsu lists a 300 W, 12,000 RPM spindle on 0-48 V DC and an extra 65 mm spindle holder. The product page gives no spindle diameter. More in Genmitsu PROVerXL 6050 Plus

FoxAlien's package includes 52 mm and 65 mm spindle clamps. A 69 mm clamp is sold separately. More in FoxAlien Masuter Pro

FoxAlien's return policy refers to Amazon, AliExpress and Walmart as its authorized brand stores and requires proof of purchase from them. More in FoxAlien Masuter Pro

No. FoxAlien lists its 65/69 mm Z clamp for the 4040-XE and XE-PRO and states it is not compatible with the XE-Ultra. More in FoxAlien 4040-XE and XE-PRO

FoxAlien's 69 mm Z clamp is for routers like the DeWalt DWP611; the 65 mm version is for routers like the Makita RT0701C. More in FoxAlien 4040-XE and XE-PRO

Genmitsu's 300 W spindle is a 52 mm, 12-48 V DC motor with an ER11 collet. Genmitsu sells it spindle-only for the PROVerXL 4030 and 4030 V2. More in 52 mm mounts

Calculated from 25.4 mm per inch, 52 mm is about 2.05 in. Genmitsu's DS52 page also says 1.65 in, which matches its 42 mm DS3018, so go by the metric figure. More in 52 mm mounts

No. Genmitsu says the DS69 is not compatible with 52 mm spindles; it matches the DS52 to 52 mm. More in 52 mm mounts

FoxAlien's 65 mm Z clamp is for routers like the Makita RT0701C, and Sienci says the Makita RT0700/RT0701 is the router it tested on the LongMill's 65 mm mount. Check the mount maker's own list for your machine. More in 65 mm mounts

Sienci gives the AutoSpin body as 64.8 mm and says it fits 65 mm router mounts. It uses ER11 collets for tooling up to 1/4 in. More in 65 mm mounts

PwnCNC sells an 80 to 65 mm reducing shim in 42 and 90 mm heights, designed mainly around its own mounts. PwnCNC advises measuring the mount ID, usable clamp height and body OD before ordering. More in 65 mm mounts

Both labels are in use: FoxAlien and Carbide 3D call their DWP611 parts 69 mm, while Sienci lists its 71 mm LongMill mount for the DWP611. Neither explains the difference, so buy the mount whose maker names the DWP611 and your machine. More in 69 mm mounts

PwnCNC sells a 69 to 65 mm reducing shim in 25 and 75 mm heights, designed mainly around its own mounts. Measure the mount and body before ordering. More in 69 mm mounts

Carbide 3D sells Sweepy 2.0 with a 69 mm collar for the DeWalt trim router, and Genmitsu matches its DS69 to 65-69 mm spindles. More in 69 mm mounts

Sienci lists its 71 mm LongMill router mount for the DeWalt DWP611 and Bosch Colt. It will not work with the MK2 dust shoe. More in 71 mm mounts

Most 80 mm kits we found use ER20: PwnCNC pairs its 80 mm mount with ER20 motors, and Onefinity's and Carbide 3D's 80 mm kits ship ER20 collets up to 1/2 in. SainSmart's earlier 1.5 kW water kit with an 80 mm holder used ER11, so check the kit page. More in 80 mm mounts

Only where the mount's maker names your machine. Carbide 3D's 80 mm mount fits only the Shapeoko 5 Pro, and PwnCNC says machines other than its Dominator need a separate adapter plate. More in 80 mm mounts

Carbide 3D's Sweepy 2.0 comes in 80 mm, and Onefinity's Suckit SM and PwnCNC's PwnBoot are 80 mm only. Check that the boot maker also names your machine. More in 80 mm mounts

No. Carbide 3D says the number after ER denotes the collet size, and the ER11 catalogs from Galaxy, Command Tool and Somma all stop at 7.0 mm, or 1/4 in. More in ER11 collets

Not in the catalogs checked: Command Tool's largest inch ER11 collet clamps 0.231-0.250 in, and Somma tops out at 1/4 in. For 1/2 in, ER20 catalogs list collets. More in ER11 collets

PreciseBits lists ER11 hex, standard and UM nuts at M14 x 0.75 and ER11 mini nuts at M13 x 0.75. More in ER11 collets

Not in the catalogs checked. Galaxy and Command Tool list ER16 up to 10 mm (Command Tool to 0.375 in), and Somma lists up to 13/32 in, about 10.3 mm, still below 12.7 mm. More in ER16 collets

Carbide 3D's 65 mm ER16 VFD spindle uses an ER16M collet nut with an M19 thread, which matches PreciseBits' ER16 mini-nut thread diameter. More in ER16 collets

Carbide 3D lists 1/8, 1/4 and 3/8 in ER16 collets and an ER16M collet nut. More in ER16 collets

In the catalogs checked, ER20 is the first: Command Tool's ER20-F500 clamps 0.461-0.500 in and Somma lists ER20 to 1/2 in. ER16 stops at 3/8 in or 13/32 in. More in ER20 collets

No. PreciseBits lists ER20 standard nuts at M25 x 1.5 and mini nuts at M24 x 1.0, so a nut labeled only ER20 does not identify the spindle thread it fits. More in ER20 collets

Haas rates its 04-1180 1/2 in collet at 0.0006 in TIR without stating where it is measured, and REGO-FIX lists 10 um for its ER standard line. These are maker claims. More in ER20 collets

Makita lists the included 1/4 in collet as part 763637-1, supplied with two spanner wrenches, 781039-9 and 781011-1. More in Makita RT0701C collet

No. Makita specifies the RT0701C for a 1/4 in collet. For 1/2 in shanks, look at an ER20 spindle instead. More in Makita RT0701C collet

No. Elaire lists its standard DeWalt collets for the DW616, DW618 and DW621 and directs DWP611 owners to its separate DWP series. More in DeWalt DWP611 collet

Elaire's aftermarket DWP series includes 1/8 in, along with 5/32, 3/16, 1/4 and 5/16 in and 4, 6 and 8 mm. Elaire does not say DeWalt approves sizes other than 1/4 in. More in DeWalt DWP611 collet

No. PreciseBits says its DEPG-0611-NUT and Talon wrench work only with PreciseBits collets, not the router's stock collet. More in DeWalt DWP611 collet

No. Carbide 3D says its precision collets fit only the Carbide Compact Router and are not compatible with the ER-11 Compact Router or its VFD spindles. More in Carbide 3D Compact Router collets

Carbide 3D ships it with a 1/4 in factory collet plus a 1/4 and 1/8 in precision collet set. More in Carbide 3D Compact Router collets