Proxxon MF70 CNC mods

I upload here different modification I do for the Proxxon MF70 CNC.



Currently includes:
+ An upper plate mod to support only one 626 bearing, if you use high quality deep groove bearings (ABEC3* or above) one bearing will be enough.
+ Z dast cover with holes for lower axes future mods.
+ [Mounts for the wires of the step motors](https://www.thingiverse.com/thing:3092707).
+ [M5 T-nut](https://www.thingiverse.com/thing:3101270)


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