How to Temper a Graphite Clay Crucible for Metal Casting at home

I got a new crucible, but it's not ready to use just yet. First, i have to temper it! It's basically all the fun of metal casting, but without melting any metal. Doesn't sound fun? Well, you know what else doesn't sound fun? Having a crucible break full of molten metal because you didn't temper it, spilling it all over and burning you. Yeah. Think about that for a moment. Tempering doesn't seem like a bad idea anymore, does it?

To do this, I used hardwood lump charcoal and the improved mini metal foundry I built in an earlier video. The crucible is a #6 I think.

Anyways, i've gotten some questions about getting into metal casting, and tempering a crucible doesn't seem to be mentioned too often. I want to change that, because it's important.

Mailing Address:
1818 Milton Ave STE 100 #1973
Janesville, WI 53545-9998

We have a community Discord server. To join, send me an email at vloggarage@gmail.com, or click here: https://discord.gg/TQWeGJU
Follow me on twitter at https://twitter.com/VlogGarage
Instagram: http://www.Instagram.com/pauls.garage
Patreon: http://www.patreon.com/paulsgarage

Music: "Quirky Dog" by Kevin MacLeod. http://incompetech.com/
#metalcasting #foundry