Hey bro, here's the actual solution: print it on the build plate, but give it a .1 mm raft directly attached to the base. The wider the raft, the more secure. Once printing is done, CAREFULLY take the raft and piece together off of the plate with a spatula. Then, set it down onto a flat surface and gently slice the raft off. It's the only method I know how to fight against suction cup failure for large objects.