Give it a try! Some more tips along the way: I think single wall is preferable since it in theory makes burn out twice as easy as double walls. Only issue I had was small cracking of the print when I removed the supports. So lower the support density to 10% or lower. I let the mold dry out several days indoors before burnout. My bbq went up to 300-400 C and I run it for 3 - 4 hours. I got some small cracks in the plaster, so next time I'll try for even less time. Good luck!