Spool Holder

The holder uses the edge of the table to ensure it doesn't move towards the printer. Requires two 608 bearings (inner diameter 8 mm, outer diameter 22mm), two 5/16'' or 8M threaded rods and 8 nuts. 4 nuts secure the lower rod, two are at the mount and two are at one end of the upper rod to prevent it from moving. The other end of the upper rod is not secured by nuts to allow for easier replacement of the filament spool.

The spool mount is by wildseyed
http://community.shapedo.com/wildseyed/osfa_filament_spool_holder

I inserted a washer into the mount before the bearing in order to prevent the inner bearing cylinder from touching the mount.