This is a spool holder designed to be mounted to a 1" x 1" peg board. It all snaps into place with no glue or screws needed, the only hardware needed is 4 608 bearings. Designed to be simple and easy to print. Should be able to print all parts on a single print for a standard size bed.

Originally was going to base it off of the TUSH on thingiverse, but since this is mounted the rollers are necessary since you cannot adjust the distance between sides. Fits up to 73 mm spool width, which should be all 1kg spools.

For bearings, any cheap 608s will do. This is the link to the ones I use for $5:
https://www.amazon.com/gp/product/B08XVFSZTF

To make, print:

• 2 universal pegboard mounts
• 2 rollers
• 1 right side
• 1 left side (same as right side but mirrored, both uploaded for convenience)

Supports are only needed in the mount plate of the holders side prints.

Mount the 2 universal mounts in the peg board first. Push the bearings into the rollers on both sides. Attach rollers to the sides, then slide in the full spool holder down onto the mount.

The full holder is surprisingly stable when together, with no vertical or horizontal sway. I've found the area to feel much more open after shifting from the default MK4 spool holder onto the peg mounted holder.

Note that the picture has the filament coming from the top of the roll, but coming from the bottom is safer.

Uses Sy's pegboard mounting system. These universal mounts solve a lot of the pains that pegboard prints have. It makes the pegs in a way that isn't brittle, and if it breaks you don't have the replace the full print, and it secures the mount better while being easier to get on and off.
 

If you need mounts for smaller holes, check out these mounts for smaller peg holes:
sys-peglock-for-smaller-holes-than-14 
Or these fully adjustable mounts: sys-peglock-parametric-pegboard-attachment