Rostock Max V2 Spool Holder for ColorFabb Economy Spool

In order to use the huge 2.2 kg spools of ColoFabb's Economy PLA on a Rostock Max v2 I remixed my spool holder.

Required hardware:
2x Nut M4
1x Bolt DIN 912, M4x35
1x Bolt DIN 912, M4x25
2x Nut M8
1x Washer M8
1x Threaded Rod M8x150
2x Ball Bearing 608 (I prefer the open version for this application)

This is my remix (from http://www.thingiverse.com/thing:1766460 ) of a remix (Original Source was: http://www.thingiverse.com/thing:1600503 )