I needed a new spool holder that fit the following criteria:
- can hold a 2kg spool (or any really large or wide spool)
- spool can be slid off and on, no screws or caps or anything, yet will not fall off
- free standing
So, I came up with this. It is extra tall and the filament support "rod" is extra long, but the unique thing about it is that the rod has a slight upward angle to it so the spool can't fall off. Because there's no "lip" at the end like most spool holders, I can fit even tiny spools that otherwise would get hung up on the "end bump".
I printed this in eSun ABS+, but it would work in PETG or PLA as long as you use enough perimeters for it to be strong enough to hold the largest spool you have. I used 4 perimeters with gyroid infill at 10%.
I designed it so that no supports would be needed for printing as well.
UPDATE: I added a beefier version, thicker parts and slightly longer feet and spool holder.