Originally Posted by
Wayne Smith
Lazer thermometer will not be satisfactory. You need an immersion thermometer to get an accurate reading. "One try the lead went straight through the mold"? The mold has to be tightly closed to work satisfactorily. How many cavities in the mold? The more cavities the harder it is to get everything going well. I have several molds that I start filling two cavities, dump, fill three cavities, dump, fill four cavities, dump, and finally fill six cavities and the mold is up to temp and everything works - and this is using a hotplate to pre-heat the mold.