Finger Joint Jig (13mm)
thingiverse
Jig for making 13 mm finger joints. This jig is my first prototype. It has screw holes that are sized and countersunk for 8g screws. It is designed for use with a 13mm straight bit and a guide bushing diameter of 17mm. I may invest in a bit with a shank mounted bearing in the future... The sides are printed half width to allow joining two jigs together. Unfortunately this seems to affect the printing of the side wings. See photos for set up/use. The print took about 3 hours. I might reduce the thickness in the future. The tongues on the print ended up curving up a little, but I don't think it affected the cut.
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