Winding adapter for Prusa spools

This is my take on an adapter to easily wind filament onto Prusa spools using a cordless drill. It does not require any tools, instead relying on driving dog and a knurled knob for hand tightening. It uses a DIN 934 M10 nut with a nominal size of 17mm between flats and a thickness of 8mm. It also uses a DIN 933 M10 hexagonal head bolt with a nominal head size of 17mm between flats and a thickness of 7mm. The length of the bolt depends on the width of the core you use. The one pictured is 100mm. The model has been optimised for printing in PETG but most materials should work. To assemble, remove the built in supports using a screwdriver or small blade. It should require some force but not excessive. Clean up the bottom of the hole if needed and install nut and bolt into their respective parts. The fit should be very tight but some glue can be used if necessary.