Prusa MMU Spool Holder

Decided to remix this design i found online to suit my needs as i found it to be the more reasonable spool holder design i found to fit my needs.

Changed most of the components of the original to include strength and support of the spools since i was planning on stacking them at least 3 high.

Changed the screw holes to a bigger diameter to fit M3 screws, no nuts required.

Thickened the back brace for more support and added a front cross bar support.
Thickened the bottom bracket holder