Anet A8 Filament guide pully (2 versions)

I tried some filament guides, but until now, every design had some disadvantages. I designed these guides so that the wheel(s) can spin during printing. This way, filament is not stuck in the guide. I printed and used both. I like the double wheel pully more, buth the single wheel print also works fine.

Printed with support. After printing, removed the support. Then carefully push a thin knive (stanly-knive) between the wheel(s) and supportstructure. After that, carefully spin the wheel(s) un