Dual BMG Chimera+ for CR-10

**Attention this will only work with a genuine e3d Chimera+. Clones seem to have a different geometry. When I can get my hands on a clone i'll create a version for that**

After searching for a decent dual extrusion solution for a while I wasn't satisfied with the options available for the CR-10.

I decided to take a BMG style approach and combine 2 of them to feed into an e3d chimera+ hotend.

I used the parts from 2 bmg clones I had lying about.

You loose a bit of print area due to ju