Duplicator i3 Filament Stand

I wanted a replacement stand for the Wanhao Duplicator i3 that would allow the spool to rotate smoothly so the extruder would not jerk the spool. I also wanted it to mount using the two existing screw locations and accomodate any size spool.

This is my second try at a the spool stand, the first version had a problem with the top of the inside supports hitting the filament when the spool was full. This new version hopefully fixes that problem. I also changed the design so that it now prints