What Temperature do you cast your flask at?

Jewelry Discussion
1

Hi there, I’m reasonably new to lost wax casting and doing lots of trouble shooting!

Can anyone advise on flask temperatures?

I’m vacuum casting pretty thick pieces in sterling silver from “castable wax 40” Formlabs resin. Around 30g per piece. What temperature should my flask be and why?

Thanks so much in advanced for any help!

Luke Brient

2

There’s lots of options and theories with this question. Most of the time I set my burnout kiln for at least an hour to “soak” the flask at 900F. That temperature allows for when the flask cools down a bit in 70F air before the metal actually gets injected. Hope that helps! Jeff

3

We always do a final soak at 900°F. Some of the flasks are large (pieces weighing as much as 8toz. or more). This is in a college setting. Large pieces with the vacuum, smaller flasks in the centrifuge.

Ruthanne