So I saw a youtube video https://youtu.be/MptNafdF_q8 of a switchable magnet woodworking project but the dimensions in the video were all imperial so I slapped together the same thing but printable with metric sizes. The magnets I had laying around at home happened to be 10mm so everything is scaled in accordance, I included the original part file so that anybody can edit it to their liking.

Non-printable parts:

• 1x 12mm ferro-magnetic (iron nickel cobalt or some alloy) rod
• 1x 20mm ferro-magnetic rod
• 12x 10x10mm magnetic cylinders

• 2x 3mm flat screws

• 1x metal saw
• 1x metal file
• glue