u/Alex_Hayashi

Hi everyone, I was wondering if you could help me find the right material to stop my helmet mold falling out of it's fibreglass jacket mold?

I applied Vaseline to the walls of the entire jacket and added registration key cubes to the silicone but while I was slush casting by hand (I have made a roto casting machine but I decided to try by hand first with this issue) and the vertical walls fell inwards messing up my cast.

So I just bought a second hand vacuum pump and chamber combo and nothings happening, the seller told me it was working before they sent it to me. It's been filled with mineral oil and nothing not even the fans spinning. Does it need something like a fuse change?