Prusa Spool Holder Sleeve

A lot of my spools lately have been cardboard and to be honest I was getting tired of making inserts for the spool to allow them to roll better.  (It seemed like no two manufacturers had the same size opening in the middle).  So, I decided to add a sleeve to the Prusa Spool Holder that works the same way - it gives the spool something smooth to roll on instead of the spool holder.  It is a a really simple design, so feel free to change it as you see fit.

I did my sleeves out of smooth PLA, but you could use about any smooth material to make these.

Happy Printing!