Here's a tool to easily magnetise bases of mini's (reupload).
To make life easier and a boring task quicker, I created these shims to rest the bases, put some glue down and drop a magnet on. This ensures that the polarity is correct, each time. Great if you're using magnetic storage.
Printed in the image using PLA but I've also used PETG.
I used 5x2 magnets, with a little glue, just to make sure they stay put. But probably would have been fine without.
The author marked this model as their own original creation.