Heavy Duty Spool Insert Filament Holder

Fits 57mm filament spools perfectly. Add a small board, a 1/4-20 bolt, a few nuts and a washer or two and you've got a nice top mount spool holder. This would be very well suited to an enclosed printer where the lid of the enclosure can be used to attach the bolt.

UPDATE: I came across some spools that didn't fit the 57mm version. I've uploaded a 52mm STL to cover a wider range of filament.

There is a .5mm recess on the bottom to suit a washer if you wish.

I have included a copy in STE