Rockler Hinge Mortising Router Bit - 1/2" Dia x 3/4" H x 1/4" Shank

Recently I modified the older version of the Rockler Dovetail Jig with 1/2" template to make box joints. This involved clamping a spacer board underneath the template as both backer board and to prevent the router bit from chewing into the template and/or jig. The test piece is then clamped vertically and a 1/4" shank straight bit with a 1/2" collar is used to create perfect 1/2" box joints - provided the bit is precisely 1/2" in diameter. I used the hinge mortise style because of the shorter carbide length.At first I used another brand (Porter Cable) of bit, and the results were very poor. It turned out that the diameter of the bit was almost 1/64" too large, so the joint fit was off by almost 1/32". Then I ordered your 1/2" bit (which is as near to 1/2" as I can measure with calipers) and the results are absolutely perfect joints. Great product!