15mm x 5mm magnet holder

thingiverse

Human: 15mm x 5mm Magnet Holder. The opening for the magnet is slightly too small, so you can heat up the printed part (for example, with hot water if using PLA) and press it into place. Alternatively, use some adhesive or, if your magnet has a hole in its center, a screw. I chose to heat it up and press fit it, and it's been secure. I didn't use any support when printing this item, as the inner roof of the hole where the magnet goes is quite long (15mm without support), resulting in a less-than-perfect surface finish. However, since this area is behind the magnet, it doesn't affect the overall performance. By not using support material, I avoided the need to break out any excess filament.