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Old August 12, 2012, 08:42 AM   #5
Senior Member
Join Date: October 28, 2006
Location: South Central Michigan...near Ohio, Indiana.
Posts: 4,470
The problem with bottom pour casting furnaces is that the valve frequently gets clogged no matter how clean your alloy starts. Oxides will form and plug or partially plug the spout and have to be poked out from below. Lee instructions include twisting a screw driver in the the slot on top of the rod to seat the valve.
I avoid the problem completely by being a ladle caster instead of a bottom pour caster.
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