A “Clamp” / Holder for thin objects at right angles. My use has it holding 1mm thick 3d printed parts for a lamp I am working on. Area removed to prevent glue from sticking.

Clamping force will of course only be as strong as the magnets you have are, so these are ideally used when a screw type clamp is unable to fit correctly, or when mocking something up and you don't have a ton of space.

Each piece requires 4 10x3mm magnets. Tolerance is .1mm, which works to a snug press fit when printed on my P1S. Printed with .2mm strong preset, swapped for Gyroid/3d honeycomb infill.

I'd recommend https://makerworld.com/en/models/385735?from=search#profileId-286157 if your project has the appropriate clearance. These are helpful later when I get more sides and the clamp becomes too big to fit.