Filament Spool Roller Stand

Here is my first contribution. I wanted a way to support the spool that was easy to change spools, offered little resistance to rolling, and was cheap to build. I used almost an entire ten-foot piece of 3/4" schedule 40 PVC, four elbows, four roller-blade bearings (I had those lying around), four 5/16 bolts, washers, and nylon locknuts.

I printed two of the spool guides, because I didn't want the spool walking along the pipe and possibly falling off. I printed four of the pipe-to-bearings, u