Kossel spool support for top mount holder

This support is design to work with the top mount holder from Elmuchacho: http://www.thingiverse.com/thing:371881
With 3.5" hard drive bearing (most of them are the same size).
Fitted for spool from Colorfabb and Plastic2print or any 750g spool with 52mm center hole. No quite sure for 1kg spool as they are generaly larger.

I recommand using my filament guide with the top mount holder, to reduce friction at the entry of the extruder http://www.thingiverse.com/thing:768071