HD Magnets thing
thingiverse
Just glue a Hard disk magnet and use as yo want!!! There are to sizes. Hope helps!! Saludos!
Download Model from thingiverse
With this file you will be able to print HD Magnets thing with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on HD Magnets thing.