Sewage pipe plastic spool

This is a simple adapter to connect build a spool out of standard European 50mm plastic sewage pipe and some 608 skate bearings. Both the bearings and the pipe are press fit when printed on our Thing-O-Matic. I used a M8 bolt through the bearing as an axle.

It doesn't really work, the diameter is too small for the loose plastic filament. When pulled the strand under tension cuts through the stack of filaments and ends up at the bottom. Presumably re-spoling might help, need to test it. Also n