Box Joint Jig Gears

thingiverse

These gears are custom-made for Matthias Wandel's box joint jig, providing an alternative to cutting gears out of plywood at woodgears.ca/box_joint/jig.html. 12 and 16 tooth gears attach to the active shaft of the jig. To secure them, a drop of super glue is applied between the gears, and three small holes are drilled for the prong T-nut to lock into place within the 16 tooth gear. The 32 tooth gear is paired with a handle on the top plane of the jig at a 90-degree angle to the 12/16 pair. The handle holds together with an M5 bolt and nut. To prevent the nut from detaching during use, either a nylon nut should be used or a drop of super glue applied after assembly. The handle should spin freely around the gear without coming loose, ensuring the hole is slightly wider than the bolt threads. A 3D printing advantage is obtaining more precise positioning and spacing of the teeth.