Special Jigs, Techniques, and Tools

 Click one of the links below to go to a page describing each project, jig, or tip.

Jigs and tools

Make your own vial-based protractor.

Build a simple jig for dividing a circle.

Another device for dividing a circle more accurately.

Techniques 

Make wooden beads with electric drill and belt sander.

Drawing a spiral

Drawing involute gear tooth profiles in Autocad