u/leaphornsfw

My father has finally retired and is teaching me lost wax casting. His method doesn't seem to use temperature ramping, but I see many people emphasizing its importance online.

His method is to add the investment slurry to the cask, then let it cure until it's hard. Next, he pops it into a cold electric kiln and cranks it to high. He waits until no more smoke is leaving the kiln, at which point the cask is popped into the spincaster. The whole process takes 3-4 hours. His results are always great.

This seems totally at odds with modern descriptions of casting. I see some schedules taking twelve or more hours. I would love if someone was able to provide some context.