I recently upgraded my foundry to a propane jet burner and had a small accident during its second use...
Step 1: Turn on Burner and Place the Crucible in Immediately
Step 2: Wait Until the Crucible Explodes.
Step 3: How Not to Screw Up Like This.
If you use a graphite or ceramic crucible, make sure to heat it up gradually and slowly. Or just use a metal crucible like I do now. Please vote for me in the epic fails contest! Thank you!