This is a hook I designed to hold some accessories for a workout machine, I wanted them to magnet to the wall behind the machine. I designed the part with a chamber on the inside that fits a 25mm rare earth magnet and is designed in a way that the print is paused right before the chamfer at the top of the chamber (approx 28.4mm high, or at line 168 if printed with a .2mm layer height), then the magnet is inserted at that height and then the print is continued over the top to fully enclose the magnet in the part. In bambu studio (and likely most other slicers) you can just slice the part then drag the Z layer bar down in the preview window to the height you want it to pause, then right click and add a pause. Then you just need to re slice it and it will automatically stop printing at the correct height, you can then insert the magnet and click resume on the printer.

This model does require supports for the hook itself, I painted my supports manually but if you let automatic supports get made make sure it is only off the bed otherwise it will fill the slot the magnet goes in and will make it impossible to insert the magnet.

Here is a link to the magnets I used: https://a.co/d/8LTGwc3

My print settings:

.2mm layer height

4 walls

25% infill

Support added (off of bed only!)