This is a filament stand that i designed for 1 KG spools or smaller. If you want it to hold 3 spools then print SPOOL HOLDER STAND V1 twice, Spool holder bar once and Middle spool bar once. If you want it to hold 6 spools then print SPOOL HOLDER STAND V1 3 times, Spool holder bar twice and Middle spool bar once. I will be making a fully modular design in the future.

For The Spool Holder bar i would print at 10% infill.

For everything else 5% should be fine.

If you have decent cooling you should not to print anything with supports.