On my last two ultracal 30 molds of chavant clay sculptures I've had issues with the surface detail coat. I get tiny air bubbles on the surface. The latex castings come out with very, very small pimples over large surface areas like you would see from mold erosion but these are the first pulls!
I try my best to do the detail coat right, I make the plaster very thin and brush it on with a chip brush to avoid air pockets but I'm wondering if this is my failing. Can the detail coat be too thin? Can brushing on the coat introduce air?
Any ideas would be greatly appreciated, I'm preparing for my next mold and want to avoid any problems.
Thank you
I try my best to do the detail coat right, I make the plaster very thin and brush it on with a chip brush to avoid air pockets but I'm wondering if this is my failing. Can the detail coat be too thin? Can brushing on the coat introduce air?
Any ideas would be greatly appreciated, I'm preparing for my next mold and want to avoid any problems.
Thank you