Caribou & Zaribo Y-Axis Linear Rails 15x15

This is a modification of the original Zaribo (or Caribou) Y-Axis (https://github.com/Zaribo/Zaribo-MK3) to replace the Misumi bearings by linear rails of 15x15 size. I have used the next rails and blocks:
- 2 x HGH15CA blocks
- 2 x HGR15RH rails (length must be 354mm)

I have used only two blocks instead three because they are too big and they don't fit on the left rail, a special adaptor has been designed.

The Motor Holder an Y-Tensioner must be changed by the ones I have included here