Lock Miter Router Bits
2 flute, carbide tipped. To join materials at 90° by cutting a 45° miter and a perfect matching tongue & groove glue joint. This joint not only increases mechanical strength, but also increases glue surface area and automatically aligns parts. Set-up blocks sold separately below.
Lock Miter Instructions (PDF)
|Lock Miter Router Bits|
|#5547||3/8 to 1/2"||1-3/8"||1/4"||#9750||$29.95|
|#5548||1/2 to 3/4"||2"||1/4"||#9751||$37.50|
|#7847||3/8 to 1/2"||1-3/8"||1/2"||#9750||$36.50|
|#7849||1/2 to 3/4"||2"||1/2"||#9751||$38.50|
|#7850||1/2 to 1-1/8"||2-3/4"||1/2"||#9753||$47.50|
Set-Up blocks sold separately below.
all customer reviews and ratings
Average Customer Rating: (4 reviews)
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By Ken Rupkalvis (San Antonio TX US)
I used this bit to make many drawer boxes for a very large desk. It's rock solid after glue up and very square off the router. I found the setup block helpful in that it cut setup time significantly.
By John McCormick (Spring Te US)
I too used this bit to make table legs because I did not want to show a glue joint down the piece. I was very happy with the outcome. The setup block was nice but not 100% necessary.
Also, if you are milling your own wood to thickness, I recommend that you leave a sixteenth or so on the thickness before routing the lock miter. This way, you are not producing a sharp edge to ride on the out feed fence. Mill to final thickness after the miter has been routed.
Best of all, the joint produces a near perfect 90 degree joint with little effort. Just make sure to clamp it tight.
By Paul Smith (Altoona PA US)
If you want to build a table leg made from 4 pieces of wood this is the answer. Used it to make legs for a Craftsman design dining room table. Many of my woodworking pals thought the legs were solid, but I explained how this bit works and a couple added this bit to their collections. Also, this is a great bit for making drawer boxes. The front, sides and back interlock and make a joint of unprecedented strength. Also, the set-up block is a near necessity for accurate joints. There are alternative set-ups but the block is easiest.
By Paul J Schneider (Red Lodge MT US)
I have used this product and found it to be very useful, and would recommend it to anyone wanting a secure joint in their woodworking. The video is most helpful.