Gears for box joint jig

thingiverse

This is a 3D printable bevel gear set designed for Matthias Wandel's screw advance box joint jig. Wandel offers various affordable and detailed construction plans available on woodgears.ca that feature numerous gear options. The collection includes axle gears with 12 and 16 teeth, as well as cranking gears with 24 and 32 teeth. Here are the calculations for each combination: Cranking_gear + axle_gear = spacing in inches per turn 32 + 16 = 1/8, 1/4, 3/8 24 + 16 = 3/32, 3/16, 9/32 32 + 12 = 1/3, 2/3, 1 24 + 12 = 1/8, 1/4, 3/8 Note that if your 3D printer bed is too small to print the 32-tooth gear, you can use the 24-tooth gear instead, as it produces the same results as the 32-16 pairing. Matthias Wandel makes his gears from plywood, but these plastic gears mesh more smoothly than my plywood gears made with limited bandsaw skills. Unfortunately, they won't work with other plywood gears I've created. A Sketchup component for a single gear tooth is also included, allowing you to design your own beveled gears for a 90° meshing orientation if desired. Wandel's box joint plans are available at http://woodgears.ca/box_joint/plans/index.html. Be sure to explore his other offerings while on the website.