RepRap Adjustable Filament Spool Roller

I bought some PLA on a spool that didn't quite fit my laser-cut spool roller. I really wanted to print something that would take a while and I didn't want to babysit the printer all night.

I had everything I needed to make this laying around the Schlaboratory - so I designed and printed the bases.

Easily adjustable for any width spool.

======== UPDATE ========
PLA can be tenacious stuff, and when you get toward the end of a spool, you may find that the spool doesn't have enough mass