Miniature Magnetic Base for 28mm miniatures (Buckyballs 5mm)

thingiverse

This is a 25mm diameter base suitable for 28mm miniatures (D&D, etc.). They can be glued or blu-tacked on to the bottom of existing miniatures so that they can stick to a whiteboard or other magnetic surface. - Uses 5mm spherical neodymium magnets such as Buckyballs. They are removable if you friction-fit. - For more flexibility in magnet arrangements, print the five-hole base. For a quicker print, use the two-hole base. Print two copies of the base. Insert the magnets into the holes and press the two halves until they snap together. The balls should be free to rotate inside the base. I have tested this base with one and two magnets. One magnet will hold a miniature upside down while shaking the whiteboard, but two will ensure a secure hold.