There is an empty space at the bottom for a 10x3mm magnet. If you want to add a magnet, you need to set a pause in gcode and put it in.

It can be used as a queen in chess, or, as I do, as a magnet to test the type of metal.

I plan to add a file with an eye for the keychain later.

If you like it, please leave a like. Maybe I'll make more of them.