Heavy Duty Filament Holder

A friend of mine needed a new Filament Holder. I also needed one so we designed one.

The Design principles were simple: 

1. no visible mounting points
2. Clip in wooden 20mm rods
3. use space sparingly, the spools should not be unnecessarily far from the wall
4. the spools should not TOUCH the walls as to not ruin whatever is behind them
5. the rack should hold approx 10kg of weight per bracket
6. it should have pluggable attachment methods (this version contains a prototype to plug into a pegboard.
7. The rack size should be flexible (plan with one bracket per meter)

The solution is a almost triangle shape (the top part is bulged upwards slightly to stabilize the outmost spool and keep it from falling over)

The attachment points can be screwed into the wall and the bracket just slid on. I tested versions printed in PETG with 15% infill and could hang well beyond 20kg on a single bracket, by far exceeding the design criteria.

How to print:

The wallmount part should be either printed face down or back side down (if you don't trust your filaments layer adhesion, though my tests above were done with the wallmount printed flat)

The Bracket should be printed upright, with the front-facing flat surface on the bed. That causes the wallmount holding section to have favorable orientation and allows to print with very little support (essentially only the front clamping hole and the inner ark).

If you get your wooden bars at Obi, you can only get 19mm or 24mm. you can get 19mm and print two diameter reducers per bracket and it will clip just fine.

You can try out the Peg Interlock mount but it didn't fit for its purpose so you might have to tinker with it in FreeCAD to make it fit.

Source files included as always.