Microjig Fitfinder MB-050-0750LM Lock Miter Router Bit, 1/2″ Shank
€95
Price: $94.99
(as of Sep 30, 2025 21:10:37 UTC – Details)
Achieve precise joinery with this locking miter router bit, a must-have addition to your carpenter tools and woodworking accessories collection. Designed for precision, it simplifies alignment and height setting so you can craft strong joints with less trial and error. Whether you’re assembling columns, newels, posts, or cabinet scribes, this bit ensures consistent accuracy across projects. The innovative design includes glue wells that allow for cleaner bonds and tighter clamping, creating durable connections that hold up over time. Compatible with stock ranging from 1/2″ to 3/4″ thick, it adapts easily to a variety of builds. Ideal as a drawer box router bit or for other joinery router bits applications, it helps you take on complex woodworking tasks with confidence. For an even faster setup, pair it with the FN12 FitFinder Height Gauge (available separately). The FitFinder 1/2 Gauge quickly identifies half the thickness of any material up to 3″ thick, allowing you to set bit height, adjust fences, and transfer cutting depths instantly—without math, measuring, or guesswork. Designed in the USA for reliability and long-lasting performance, this router bit brings professional craftsmanship within reach, making it a reliable tool for hobbyists and seasoned woodworkers alike.
PRECISE HEIGHT SETTING EVERY TIME: The lock miter router bit uses a Center Finding Platform to establish the correct bit height on the first try, simplifying setup and minimizing wasted stock in woodworking tools
ACCURATE JOINT ALIGNMENT MADE EASY: Once the height is set, only the fence requires adjustment, making this MICROJIG router bit ideal for fast, reliable lock miter joints with router bits for woodworking projects
CLEANER AND STRONGER GLUE JOINTS: Exclusive Glue Wells provide room for excess glue, creating tighter joints and easier clamping; Essential among wood joinery tools and miter router bits for professional-grade work
COMPATIBLE WITH MULTIPLE STOCK SIZES: Works with stock from 1/2″ to 3/4″ thick, this lock miter router bit supports a wide range of woodworking tools for completing columns, newels, posts, cabinet scribes, and advanced wood joinery
DESIGNED IN THE USA: This router bit delivers reliable performance and is ideal for creating strong joints in a wide range of woodworking projects; Designed for use with the FN12 FitFinder but will work with any height gauge
Customers say
Customers find the router bit easy to set up and say it works well. The fence adjustment process receives mixed feedback, with one customer noting it takes time to dial in the correct settings. The product’s quality and value for money also get mixed reviews.
J Lucas –
Best thing ever
This is far and away the best router but for joining. When paired with the Fit Finder it works flawlessly.
Edward P. Seitler Jr. –
Easiest lock miter box it to use and set up
Microjig did it again, the innovation was right on par with their Matchfit system
Bill McDonald –
Cuts well
Works well, Microjig setup tool needed for easy set up on router table.
Patrick S. –
Easy to setup, great joints
We bought this bit combined with the microjig fit finder. We were able to set the height of the bit on the first try. Fence adjustment still took a while but the fit finder fewture worked excellent and we were able to get high quiality joints with minimal effort
tim lucier –
Overpriced
The quality is excellent, well made and machine way overpriced
PBJae –
This is NOT for the occasional user, only the professional carpenters.
I am 67 and have been a wood working hobbies since I was 16. I have built a lot of furniture. One thing I seem to have problems with is miters. I can spend 30 minutes with gauges and test cuts and cannot get a perfect miter no matter what. I have so many expensive jigs, yet cannot get a good miter.This lock miter bit and match fit guides were purchased. A dozen you tube videos later (I am a retired RN, and YouTubed paracentesis to prepare to help a surgeon do the procedure). I cannot get a decent miter lock. I was able to adjust it on some scrap wood, but when I tried to do this on a full sized piece of milled up and jointed multi species panelsâ¦NOPE Does not live up to the hype. This tool is a waste of good money unless maybe you became a professional miter lock jointer. I am sure with sufficient guidance, practice and much more expensive tools for set up with a few years of practice, I can get this to work. But, if you are a hobbies who enjoys making different projects, stay away from this lock bit and measuring tool.PS, it was helpful in destroying $50 of wood and about 10 hours of work. Piece of crap!
Amazon Customer –
Amazing results!
It is a process to dial in the correct settings, but with patience, this will produce a near flawless corner. Be prepared to use some sacrificial material and go slow and steady in the router table. We used this on white pvc trim boards to wrap deck beams, and seams are very visible, but with this bit and patience, you can’t even see it. The instructions don’t mention it but once your pieces are assembled, run the side of a smooth screwdriver along the corner to blend the edge, and it will look like one piece. I would definitely recommend getting the depth guage tool.
Gayle G –
Microjig got it right
The built in center mark is a game changer for cutting miter lock joints. Makes setup a breeze. Now the only challenge is holding your work piece stable. Hint: (make jigs using Microjig clamping systems)
Brian Jenkins –
Quality is excellent. Straightforward to set up with the Microjig jig. Thoroughly recommended
Rolf.GD –
Einmal nach Anleitung richtig eingestellt liefert er perfekte Ergebnisse.Im Ãbrigen: Erstklassiger Support!