A handy magnet, that can be switched between on and off positions. Notes and photos can easily be removed without detaching the magnet from your fridge or board.
The OpenSCAD design is fully parametric, so different sizes, magnet cavities and wordings can be incorporated with minor changes. Supports are not needed, therefore it should be possible to print this thing on any 3D-printer easily.
See the switch in action: https://www.youtube.com/watch?v=ksh_C5nZZTU
UPDATE 2016-07-06: swapped positions of words on/off due to community feedback
A lower resolution at 0.2mm works, too, but the backside will get a lot rougher. A high infill density is not needed due to low loads.
Insert the magnets
Put your magnets into the cavities on the backside. If they won't hold there due to low friction, use some drops of superglue to secure them.
Hint: You may use cylindrical magnets instead. They fit in the cubic holes, too.
Important: If you're using cube shaped magnets, be sure to use the right orientation. The poles should be facing up or down, not sideways. The poles can easily be identified by attaching to magnets with each other; they are on the side sticking together or pointing outwards.
Placing the magnets inside the cavities
Glue the words
Use some drops of superglue to attach the letters on the front of your magnet. Tweezers may help no glueing your fingers together.
Using only little superglue will avoid ugly blobs
Switching the magnet is easy
Parts used (BOM):
- 1x magnetic switch (printed)
- 1x letters (printed)
- 2x magnets (cube 5x5x5mm or cylndrical D5x5mm)