Shortlist · Miter gauges, T-track and stops
Miter gauges, sleds and setup bars for 3/4 x 3/8 in slots
Approved miter gauges and miter track whose makers state a 3/4 x 3/8 in slot fit, with how to check your router table's actual slot first.
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Short answer
Measure your slot first; then, for a 3/4 x 3/8 in slot, choose POWERTEC's 71391 if the slot has a T-slot under it, or Kreg's KMS7102 if it does not. If your top has no slot, POWERTEC's 71568 (track with a bar) or 71566 (track only) adds one. No setup bars or coping sleds are in our approved catalog yet.
How we chose
A part is on this list only if:
- The maker states a 3/4 x 3/8 in slot fit. That nominal size is common on router tables: Bosch says the RA1181's slot works with most table saw miter gauges that measure 3/4 in wide x 3/8 in deep.[1] Kreg and POWERTEC each sell the gauges and track below for that slot size.
- Actual width matters, so we show the ranges makers publish. INCRA's checker gives a typical 3/4 in slot as 0.740 to 0.770 in actual width, at least 0.375 in deep, with an optional T-slot area 1/8 in high x 15/16 in wide.[2] INCRA's Miter 1000SE adjusts to actual widths of 0.740 to 0.765 in,[3] as do its Miter Slider SE bars.[4] INCRA says the Slider SE is not recommended for stationary jigs that must lock in the slot.[4] Those INCRA parts are not in our approved catalog yet.
- It is in our approved catalog with a store listing.
The title also names setup bars and sleds. Kreg's PRS3400 bars are seven sizes from 1/8 to 1/2 in,[5] Woodpeckers' Coping Sled rides the router table fence instead of the slot,[6] and so does WoodRiver's AWR-BCS.[7] None is approved yet, so none is a pick. We do not add others to fill the list.
Gauge for slots with or without a T-slot
POWERTEC 71391 precision miter gauge system with 24 in multi-track fence and flip stop
Pick it if: Router tables with a measured 3/4 x 3/8 in slot, including T-slotted ones
- Why it's here
- POWERTEC sells the 71391 kit (gauge, 24 in multi-track fence and flip stop) for standard 3/4 x 3/8 in miter slots with or without T-slots, with expansion discs to take up side play.
- Watch out
- POWERTEC says it does not fit 5/8 in slots. POWERTEC's figures have not been checked against our fact register yet; compare your measured slot with POWERTEC's page. On Amazon, check that 'Ships from / Sold by' shows Amazon.com or POWERTEC.
- Insert-plate outline (e.g. 9-1/4 x 11-3/4 in)
- Not stated
- Plate thickness
- Not stated
- Plate corner radius
- Not stated
- Router motor body diameter
- Not stated
Gauge with a long fence and swing stop
Kreg KMS7102 Precision Miter Gauge System
Pick it if: Router tables with a measured 3/4 x 3/8 in slot
- Why it's here
- Kreg sells the KMS7102 as a miter gauge with a 24 in fence and swing stop for standard 3/8 x 3/4 in miter slots.
- Watch out
- Kreg's listing says the bar does not engage a T-slot under the slot. Kreg's figures have not been checked against our fact register yet; compare your slot with Kreg's page. On Amazon, check that 'Ships from / Sold by' shows Amazon.com or Kreg.
- Insert-plate outline (e.g. 9-1/4 x 11-3/4 in)
- Not stated
- Plate thickness
- Not stated
- Plate corner radius
- Not stated
- Router motor body diameter
- Not stated
Add a slot to a shop-made top, with a bar
POWERTEC 71568 32 in miter T-track with miter T-bar
Pick it if: Shop-built router tops without a miter slot
- Why it's here
- POWERTEC's 71568 pairs a 32 in miter track that takes 3/4 x 3/8 in bars with a T-slot miter bar, and POWERTEC says the track can be cut to length.
- Watch out
- You have to rout a groove for it; POWERTEC gives no outside dimensions for the extrusion, so check them before cutting. Not yet checked against our fact register. On Amazon, check that 'Ships from / Sold by' shows Amazon.com or POWERTEC.
- Insert-plate outline (e.g. 9-1/4 x 11-3/4 in)
- Not stated
- Plate thickness
- Not stated
- Plate corner radius
- Not stated
- Router motor body diameter
- Not stated
Add a slot to a shop-made top, track only
POWERTEC 71566 32 in standard miter T-track
Pick it if: Shop-built router tops where you already have a bar or gauge
- Why it's here
- POWERTEC's 71566 is a 32 in anodized aluminum miter track machined to take 3/4 x 3/8 in T-bars.
- Watch out
- Track only, with no bar, and POWERTEC gives no outside dimensions for routing the groove. Not yet checked against our fact register. On Amazon, check that 'Ships from / Sold by' shows Amazon.com or POWERTEC.
- Insert-plate outline (e.g. 9-1/4 x 11-3/4 in)
- Not stated
- Plate thickness
- Not stated
- Plate corner radius
- Not stated
- Router motor body diameter
- Not stated
Fit at a glance
| Part | Slot or track (maker's statement) | Note |
|---|---|---|
| POWERTEC 71391 | 3/4 x 3/8 in, with or without T-slot | Not for 5/8 in slots |
| Kreg KMS7102 | 3/8 x 3/4 in | Bar does not engage a T-slot |
| POWERTEC 71568 | Track takes 3/4 x 3/8 in bars; T-bar included | Rout a groove to install |
| POWERTEC 71566 | Track takes 3/4 x 3/8 in T-bars | Track only |
Check before you order
Measure your slot's width at several points and its depth, and look for a T-slot at the bottom, as the miter slot guide and the measuring guide describe. Then compare with the range on the gauge maker's page. See the miter gauges and T-track hub.
Questions
Will these fit the Bosch RA1181 slot?
Bosch says the RA1181's slot works with most table saw miter gauges that measure 3/4 x 3/8 in, and supplies none. Both gauges here are sold for 3/4 x 3/8 in slots; measure yours to confirm.[1]