3030 Straight Spool Holder

Having recently finished building our new Cultivate3D Beast 3D printer I was unhappy with the flat acrylic spool holders as the sharp edges were grinding the inside of the filament spool and there's no tip on them to prevent the spool from working its way off. All of the spool holders I found on Thingiverse were designed to mount on a horizontal piece of 3030 extrusion, and the one holder I found for a vertical piece had a 90-degree angle in it which would increase the dimensions of the printer