I'm completely new to cnc, and of course, I have a problem:

https://www.cnczone.com/forums/attac...d=454444&stc=1
I will make a linear guide ( 1605 ball screw, hiwin rails, chinese close loop stepper Nema 23) that will close the two piece die set, and it's contact surfaces needs to be without any gap.
The question is how to achieve the perfect positioning every time? ( gap between the contacting surfaces needs to be ''zero'').