Thanks allot onehundred80 Drawings are perfect. (I just need to convert them to Centimeters)

I'll make correct drawings with Acad and hand them over to my previous school.
Maybe the teacher can make it an assignment for the students and i can pick out the best once's
If my lazy approach doesn't work, i can make them myself.

The nut/adapter can be made on the turning lathe, but i'll try some existing adapters first.
I added a photo of one that i think will work.

Again thank for the effort!!