This is a couple more spool holders I designed to hold large economy spools of filament. They fit over the top corners of a Lulzbot Taz 5 / 6 printer, but they can fit inside any standard x rail. I used some velcor cable ties to hold it to the top of the printer. You will also need a 1 inch PVC pipe scrap for the spool to sit on.
For the v2-3 file, I remove the spiral pattern so it has a plain finish now. For the 45_tool holder, this will print for the right hand side. If you want the left you'll have to mirror it in your slicer.