Makerbot Spool Adapter for Another Filament Spool Holder

I liked the simple yet effective design of TheKre8Groups' Another Filament Spool Holder.

http://www.thingiverse.com/thing:32204

My only issue with it was when using a spool of Makerbot ABS. the spool would wobble on the thin spindle. I wanted the spool to roll easily, with as little wobble as possible.

This remix of the spindle cuts it apart, and adds an insert so the two parts can be joined. I also added two guide rings to keep the spool centered. The spool insert is sized for most Mak