Hi Temp 1800 Mold Release: Aerosol mold release primer for slumping and fusing molds. Hi-Temp 1800 is great for metal molds because there’s no need to pre-heat the mold before applying.
Hi-Temp 1800 dries instantly and is good for multiple firings below 1350o Fahrenheit. Above 1350o, you will need to re-apply mold release. On ceramic molds, coat thoroughly about 4 times. Holds up well for multiple firings.