How to print this without raft under empty space

Hi Rob, what resin is this? Could you share the PreForm file with me? We were not able to replicate it with a closed torus.

Black V4.1 100um:

Black V4 100um:

Black V4 100um with mini raft:

Our guess is that guess is you have raft optimized for Build Platform 2 enabled. You should disable it.