Good afternoon everyone,

For my project I would need to machine inside a cylinder (40mm diameter).

I was thinking I could duplicate axes Y and Z by having two times the same moving parts with a kind of bridge linking them together.

This bridge would be going through the inside of the cylinder.

For that I would need to duplicate two axes and not only one.

I saw from this video (I guess) : https://www.youtube.com/watch?v=QQt1ZcaJhSE&t=298s

how to duplicate one but not two axes. Would someone know how to do that?

Or even better, have already created a machine that could machine inside a cylinder?

Thanks in advance.