Focus stacking rail arca swiss

I made this rail because i didn't want to spend 1500€ on a 200mm - All in one - touchscreen system.
Most of the parts are cheap, easy to build or change and open source.

Minimum movement is 1µm ! Supports professionnal DSLR with macro lens.

What you'll need :

- 8 mm threaded shaft with anti-backslash (very important for the precision) x1 (length 400mm here)
- 8mm steel linear stem x2 (linear guidance) (lenght 400mm here)
- 2x20mm Aluminium section 1x (lenght 400mm here)
- SCS8