*my Hinge

This is for 3D drafting materials. My standard time is 5 minutes. The censored time is 20 minutes. Writing quickly is not a chore. Rather, it will be accurate. There is no point in looking at a manual while drawing. Struggling to write is ridiculous. You should always think of an easy way to write.

Examples of my drawings
https://www.youtube.com/watch?v=w9aaL3Z2l9A

https://denshiman.com/hinge.html