Double sided robust and reliable XY Idlers Mount for Hypercube Evolution

Update! This version has now been superseded by version 2 that uses square nuts:
https://www.thingiverse.com/thing:3939977

This is a remix of a very smart part.
Printing the idlers standing up makes them very sturdy because force from pulleys are not between layers.
See original part for more information of why this design is superior.

This part is a remix to fasten the idler on two sides of the 3030 frame and will take a 10mm rod.

18/02/2019 - Updated to better fit diffrent needs. No tracks that fit inside the 3030 frame. This interferes with the inside hidden corne brackets. Inside part behind the pulleys for extra rigidity.