Lock Miter Bit
Over 900,000 GRR-RIPPERs sold
Take the guesswork out of setting up lock miter joints with our patent pending Center Finding Shelf!
Recommended By
FITFINDER Lock Miter Bit
LIMITED TIME ONLY
Lock Miter Bit + 50% OFF 1/2 Gauge
- Patent pending Center Finding Platform sets the correct bit height first time and every time.
- With the height correct, only the fence needs to be adjusted for the perfect joint.
- Designed to work with our FN12 FitFinder but will work with any height gauge.
- Exclusive Glue Wells allow for tighter, easier to clamp joints by providing room for excess glue.
- Works with stock from 1/2" (13mm) through 3/4" (19mm) thick.
What's Included:
- Lock Miter Bit
- 1/2 Gauge
or buy separately
LIMITED TIME ONLY
FITFINDER
Lock Miter Bit
- Patent pending Center Finding Platform sets the correct bit height first time and every time.
- With the height correct, only the fence needs to be adjusted for the perfect joint.
- Designed to work with our FN12 FitFinder but will work with any height gauge.
- Exclusive Glue Wells allow for tighter, easier to clamp joints by providing room for excess glue.
- Works with stock from 1/2" (13mm) through 3/4" (19mm) thick.
100% Satisfaction Guaranteed
- Priority Mail Express: No delays.
- Priority Mail: 1-2 day delay. No delays for local delivery.
- First-Class Package Service: 1-2 day delay.
Fast and precise lock miter joints
The lock miter joint can’t be beat for making columns, newels, posts and cabinet scribes, but the bit and stock have to be exactly centered together. Only Microjig’s Lock Miter Bit features the Center Finding Platform milled into the bit body at the precise center of the cutting profile. A solid measuring point to set the correct bit height the first time.
Once the height is correct, only the fence needs to be adjusted to perfect the fit. This greatly simplifies the router table setup for perfect joints with minimal test cuts and wasted stock. Now you can confidently add this important joinery to any of your projects.
Use it around your whole shop.
Features.
FITFINDER Lock Miter Bit
FITFINDER 1/2 Gauge
Center stock instantly with no measuring or math.
The FITFINDER 1/2 Gauge allows you to find the 1/2 thickness of any material up to 3" thick. Create perfectly fitting joints with zero guesswork, set fences and transfer cutting depths instantly—all with no math or measuring. Works perfectly with the FITFINDER Lock Miter Bit.
Frequently Bought Together
FITFINDER 1/2 Gauge
FITFINDER 1/2 Gauge
MATCHFIT Dovetail Clamp AP
MATCHFIT Dovetail Clamp AP
MATCHFIT Dado Stop
MATCHFIT Dado Stop
MATCHFIT Dado Stop Pro
MATCHFIT Dado Stop Pro
What people are saying.
Take the Trial and Error out of Lock-Miter Setups
Effortlessly find the halfway point.
Got questions?
Does the FitFinder Work with any other Lock Miter Bit?
Our Lock Miter Bit works with our FitFinder because we have a shelf milled into the bit to set the height from.
No other Lock Miter Bit has this feature, so they do not work as well with our FitFinder 1/2 Gauge.
Can I use the FITFINDER Lock Miter Bit on plywood?
You can use the FITFINDER Lock Miter bit in plywood, but you may need to adapt how you work just a bit.
As you know, plywood is made of layers with the grain running perpendicular between the ply’s. So every cut you make on it with any bit is cutting both with and across the grain. This means it will not cut as smoothly as with the grain, and there is likely to be some fuzz or tear-out in the cross grain sections.
Make a test cut on a scrap of the same plywood to see how it works. I would recommend a two-cut solution: Set the bit up as normal, then attach a cover strip of 1/8” or even 1/16” Masonite or laminate on your router table fence with a notch cut out for the bit.
Make your cuts with the strip in place, then remove it and re-run the parts as a cleanup pass. The extra light cut should be much easier and cleaner.
Finally, our Lock Miter bit is designed for stock 1/2” to 3/4” thick. 1/2” plywood is typically less than 1/2” thick, so the results with it are not great.
New MicroJig lock miter joint router bit has easy setup
FitFinder Lock Miter Bit - Instructional Video
Specifications.
Parts
- Lock Miter Bit
Parts
- Router Bit (1/2"–14°)
Parts
- 1/4" Relief Router Bit
Available in 1/2" shank size.
Available in 1/2", 1/4", 12mm, and 8mm shank sizes.
Available in 1/2" and 1/4" shank sizes.
MB-050-0750LM
1/2" Shank: MB-050-0514
1/4" Shank: MB-025-0514
12mm Shank: MB-12mm-0514
8mm Shank: MB-8mm-0514
1/2" Shank: MB-050-025ST
1/4" Shank: MB-25-025ST
Designed in the USA
Made in Taiwan
Designed in the USA
Made in Taiwan
Designed in the USA
Made in Taiwan
Customer Reviews.
Our Story
Family-Owned & Operated
Established 2001.
For beginners and pros alike, Microjig is reimagining an ancient craft and changing the way you work with wood.
Build your projects with more protection, more precision, and more passion. Work safer. Work smarter.
Designed in the USA by Woodworkers
Protecting Users in 37 Countries and Counting
1% Donated toNon-Profits andCharities
It all started in a garage workshop...
Henry was working on an intricate project and was challenged with cutting thin strips on a table saw. His frustration with traditional methods sparked one of the most innovative woodworking tools to come out in decades.
After countless hours and prototypes, the Grr-ripper was born. Henry has continued to innovate, and Microjig now offers multiple unique product lines all over the world.
WOOD Innovate Award
WOOD Innovate Award
Rated 5/5
Rated 4.8/5
Best for Table Saw Safety
#1 Best Overall Push Block
Best High-end Push Block
Best Multifunctional Push Block
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