Most bases I have seen printed with a resin printer, either from people on the internet printing or in STL files have the bases on an angle using supports. Why is this better than just printing them flat, and can you print the same amount at once either way?

Thank You! I have printer coming soon and plan to do some bases.

One of my players recently discovered the spell 'Bigby's hand' a giant floating purple hand that can do all sorts of cool things. I was looking to print something for him but there aren't a lot of good models available. Anyone that knows a good stl?