12x3 mm Magnet Base for Ultimate Spool Holder

I already had 12 mm diameter magnets for Jelly Titan's adjustable magnetic keyboard wrist rest feet , so I enlarged the magnet mounts in G.Design's Ultimate Spool Holder to fit them. OpenSCAD code is included; it requires the original part file to work. You can change the name in the import() , or rename the original STL, in order to use with a different pattern.