50mm -> 32mm spool adapter with anti tangle guard

I load my filament from the top. Works like a charm. But when using new full spools, the filament goes of the spool because the extruder is pushing the filament back up.

So i designed this.

The adapter makes it easier to use 50 mm spools on a 32mm spool holder. As an added bonus there is the guard that feeds the filament to the printer. This guard is supposed to keep the filament on the spool. I have been using this for a few weeks and so far so good.