Had to print it a few times to figure out how to keep it sticking on the build plate. The BuildTak foil did the job. The raft i printed to be sure to get it of again.I noticed that a little feature in Cura would allow to reduce the infill dramatically. If the first layer of every step would be printed up to the next infill wall, there would not be any holes in the end product. That would reduce time and material as well es reducing the problem of the corners pulling up.