I made four of these Infinity Cubes from Melmaking, but the first two failed. I initially tried red PLA with PVA as support material, but the prints eventually failed because the PVA wouldn’t hold to the BuildTak surface. Then I tried white PVA with red PVA as a breakaway support, and that worked perfectly. A week later I made one out of blue PETG using itself as a breakaway support, which also worked perfectly, and was much faster switching nozzles is slow.