A friend needed to mount a second-hand whiteboard but missed the mounting-hooks. So this is a simple design based on a "commercial" one which I had laying around.
Because i was already busy with it, I created a few other hooks for other board thicknesses. I added the stl's for 08 - 24 mm thick boards. Except for the width of the hook they are the same.
Edit: added two more extra sizes for mirrors and such, 3.5 mm and 4.5 mm.
The edges on the back are rounded to prevent scratching while mounting.
I didn't print all versions, but they slice well and there is no reason why they will not print correctly.
Print them on the side (as in the stl) for optimal strength. There is a little bridging (16 mm) but support is not really necessary.
It is strong but be a lttle carefull while mounting, going in full force will split the thing (PLA).
A zip-file with all sizes is also added.
Happy mounting :)