ABP to HBP in a few steps

Now new and improved! (Details at the end.)
I gave up on my Automatic Build Platform! (ABP)
I must admit that at the beginning we had some swell moments. Those graceful wipes at the start and the rolling off the belt at the end were memorable. But there was always something getting between us. Projects that would not stick or that would get knocked down mid-build half hour into the build. And in the rare moments when a raft-less object would finally finish it would have a wavy base. We tried m