Rigidbot CoreXY v2

### Rigidbot CoreXY v2.
This is a conversion of moving bed Rigidbod printer to CoreXY machine and using 10mm carbon rods and bushings for X axis.



[Version 1 is published here. Please read the instructions and parts list](https://www.thingiverse.com/thing:3468731). The differences in the two version include the option to replacing the X 8mm steel rod and bearings with 10mm roll wrapped carbon fiber rod and brass bushings. The steel rods can also be used with this version - use the 10->8 mm spacers to make up for the smaller rod.

**Brass Bushings:** The bushings are quite cheap and are copper plated steel, but have a thin graphite lining, which provides smooth gliding surface. The graphite will wears out over time, and doesn't damage or scar the carbon fiber rods. They have been working well for last 6 months of use and the intention is to periodically replace them (maybe aft