Magnetic holders for holding down PCBs in a pick and place,
or work pieces in a laser cutter or any other machine with a metal base.
Print with your favorite rigid material.
Video and modeling demo:
Any round or rectangular magnets will work.
Default templates are given for 10mm round magnets, 0.5" (12.7mm) round magnets, and 3x9.5x24mm rectangular magnets.
Use Windows 3d Builder to open the template and adjust if your magnets are different sizes.
Can be 3d printed with any rigid material.