I made the Bento Box for my X1C and wanted a way to hold the power supply cord when not in use (I didn't install a switch with the Bento Box) With the magnets in the holder I can keep the cord behind my X1 out of site, but easy to find to plug in when I need it. I put this together in TinkerCAD it uses 2- 2mm x 6mm magnets. I pressed them in with a quick clamp. If you want to glue them in scale the model up. Printed on its back, no supports needed. PEI plate with Bambu black PLA.