Stackable Interlocking Circular Plate

I made this to flatten out the bottom of the resin casting pot the hubs made me out a 2-1/2 Gallon Air Pressure Paint Tank. The pot is pretty tall and so I made it so I can add multiple tiers and cast multiple pieces at once.


My suggestion is to print the halves flat with supports.

First 3D printer and first time making something from scratch on TinkerCad so if you have any suggestions/wanna teach me something cool to improve the design, or just wanna mess with it here is the link :)

https://www.tinkercad.com/things/0MBXJ8R6LFR