Simple fillament roll holder
Simple holder to put a roll of fillament on.
You need 4 M4 screws of about 25mm length, 8 small and 8 large washers and 4 8mm bearings. Just stick one small washer, one large, one bearing, one small washer and then again one large washer on one screw, place it n the inside into one of the printed holes. Repeat until all four holes are filled Voila :)