if u want to print this u don't need supports. i used these magnets: https://nl.aliexpress.com/item/1005010075244557.html?spm=a2g0o.cart.0.0.202b61d7KGUeyb&mp=1&pdp_npi=6%40dis%21EUR%21EUR%207.70%21EUR%203.19%21%21EUR%203.16%21%21%21%402103917f17763349014592174e76b5%2112000051245745108%21ct%21NL%216465474401%21%211%210%21&gatewayAdapt=glo2nld
But the holes are 4x2 cm so you can use your own.

How to place the magnets?
At the sides you have to do + - + - around and at the top you need a + and at the bottom a -

to give it colors you have to fold paper around here are some --> https://docs.google.com/document/d/1Lfcn5Xm1h6ropbM8PBe-5jGU3SbjZRzvYAPC75PUEFg/edit?usp=sharing
please copy this document

its not perfect work is still in proces