This tool allows you to manually wind a spring that works for twisting.
It is designed to use a regular round drill bit.
The model is parametric (fusion360 project file is attached), which allows you to simply enter 3 parameters and the model will be adapted exactly to your drill. You only need to specify the diameter, total length, and length of turns of your drill bit.
Ready-made .stl files are available for drill bits with a diameter of 4 mm and 3.5 mm.
You will also need to a screw with a hidden head for part called the rotor.
(check the video to get more details).
rotor_3.5.stl | 5.7MB | |
rotor_4.0.stl | 5.6MB | |
spring_maker_v4.f3d | 262.1KB | |
stator_3.5.stl | 6.6MB | |
stator_4.0.stl | 6.5MB |