Magnetic Key Holder
thingiverse
When mounted like in the picture, no additional supports should be needed. Five holes can be found on the back of this item, which are perfect for attaching magnets. I have used the top three, but there are two lower holes available if you need extra support due to heavier keys. These holes are specifically designed to accommodate 6x2mm magnets.
Download Model from thingiverse
With this file you will be able to print Magnetic Key Holder 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 Magnetic Key Holder.