This free online gear template generator is designed for making scale accurate paper gear templates which you can glue onto wood and then cut out with a bandsaw. I recommend printing the gears with an ink jet printer. Even cheap ink jet printers print very scale accurate but Not all laser printers are accurate. This is the new version (as of September 2015). You can still access the old Flash based version Getting the printout to scale correctly Different browsers print at different scales depending on browser type and printer configuration. Some notes about gear design and this gear template generator This template generator is intended for generating paper templates for cutting low precision gears from plywood, phenolic, or other suitable materials with a band saw. This gear template generator generates shapes for involute spur gears. The gear tooth generation is not perfect. Rack and pinion gearing You can also generate rack and pinion gears. Any questions?
Related: Open-source fabrication technologies