The tower supports dice from 15-25mm and from what I've tested does a pretty good job and random output. No supports needed, print standing upright and the only thing layer height should change is the slope at the very bottom's roughness. Overall I just wanted to make a tower that wasn't too complicated so people can do stuff like paint it if they wanted, I hope you enjoy it :)

Edit: I made a version with no catch tray for if you wanted to rapid fire dice.

Here's a fun short of me testing the tower out.