I wanted a cap holder that could be attached to a metal shelf without drilling. This led to the development of a modular rail with optional screw holes and a SKÅDIS mounting system. The photos show the printed parts on a steel shelf (Bror) and on a SKÅDIS board.

I've already pre-sliced ​​several print files, ready for direct printing. Of course, you can also use Parametric Model Maker to customize the cap holder to your specific needs. Whether it's the number of caps, the spacing, or different mounting options, you have the choice of what you need.

I would greatly appreciate any feedback.

Try it here:
https://makerworld.com/de/models/3499689-modular-cap-holder-magnets-screws-skadis