Solder spool holder

A solder spool holder I designed for my 500g Stannol Spool.
But every spool with an inner diameter greater than 11 mm and an outer diameter of less than 65 mm schould work.

The holes in the bars are designed for M4 screws and should be tapped.

EDIT: Made a version were the holes for the bars are 0.4 mm wide since the 0.2 mm in the first version were a little tight on my printer.

EDIT: Made another version of part 1 where the M4 thread is designed in place. This is not tested right now.