re: #435 ThomasLite

Good point
Camping-Boiling would be what 90C at 6000 feet? 101 in death valley, below sea level…

I work in molten metals. Customers cast them in very sophisicated machines. One guy pulled vacuum in the melting chamber, routine for some alloys but a very bad idea with brass. The zinc boiled so hard certain parts inside were ruined. He switched to pressure on the brass, vacuum in the casting chamber problem solved.