parametric rubber band propeller twister

thingiverse

A little device to twist those pesky rubber band propeller driven aeroplanes and whatnot. Needs a on off switch button type thingie. Constructed for 9v battery, though that compartment is a little tight in this modell. And you add your own data for what motor you have lying around, mine was an old printer motor. Instructions printed with prusa mendel 2. 0.1 mm layer. 0.3mm hot end. print two of the drivers. Measure your prop, the current setting is for standard red plastic props that comes with balsa models. print one of the box, after measuring your motor and battery and added tolerances for your print settings. you need 2 * 3 mm screws with the correct lenth, I used wood screws. I guess screw and nut would work. you need motor, 9v battery, or maybe a more efficient motor and 2 AA (R6) batteries and a battery case. One connector that you solder to the motor. If someone could make a on off switch to print that use a spring, that would be awesome.