Heavy duty gear set M2 - 36 involute spur gears, 5 mm D-shaft / hex / idler + test stand

**Big, strong, easy to print.** A complete module 2 gear library: 12 tooth counts x 3 bore types = **36 gears** with 8 mm wide teeth that a 0.4 mm nozzle reproduces cleanly. The right choice when the gears have to carry load. **Three bore types, same teeth - they all mesh with each other** - **D-bore 5 mm + hub with M3 set screw** - NEMA17 steppers and most 25-37 mm gear motors (flat at 4.5 mm) - **hex bore 5 mm** + printable hex axle - torque through the flats, no screws - **round 5 mm idler**…

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