This is pots (cases) which can hold magnet on top thanks to steel washer. This pots are mainly used as a base (support) of decorative magnets like above picture.
https://www.youtube.com/watch?v=kUbm9kTdxnc

This was actually simple and small project but I am happy.

The magnets are designed and made by Mrs. Tsubaki.
https://minne.com/grandolce100

https://minne.com/items/2331191
https://minne.com/items/2326351
https://minne.com/items/2325290
https://minne.com/items/2331198

I am using DaVinci 1.0 3D printer by XYZ printing.

Layer pitch is 0.3mm.
Normal speed and normal shell thickness.

No raft. No support.
With stick paste(Tombow, Shiwanashi PIT).

90 minutes to print. 20 minutes for shaping, constructing and sanding.
8m for ABS.

Other parts,
1 washer (ø12-ø26, nickel plated steel)