Printrbot Simple Metal Filament Spool Spacer Ring

The Printrbot simple metal now comes with a filament spool holder, but it allows the spool to interfere with the y-axis arm and bolts. This spacer ring prevents any interference. I have used it with 0.5Kg spools. I don't have any 1 Kg spools to try it with.

I realize this is just a piece of pipe, but it's just the size you need!