Manual spring making tool

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).