View Full Version : Does Monotype lead ingots produce cavities?
Marlin Hunter
04-13-2009, 08:11 PM
( I wasn't sure where to post this)
Does Monotype lead ingots produce cavities?
(No, I don't plan on eating them...)
I bought some monotype printing lead off eBay. I melted some and poured it into a Lee ingot mold. Every ingot has a hollow cavity in the side. Does Monotype lead shrink more than wheel weight lead? I noticed the Monotype ingots are very shiny, while the WW lead is dull gray.
briang
04-13-2009, 09:03 PM
Cast a couple boolits and measure them. Then compare to ww boolits
454PB
04-13-2009, 09:08 PM
Actually, monotype shrinks LESS than WW alloy. It's not unusual for there to be a cavity in the side of an ingot, it's caused by a cold ingot mould.
Fresh ingots of just about any lead alloy are shiney and only dull (oxidize) due to age or moisture.
hammerhead357
04-13-2009, 09:34 PM
+1 for what 454pb said. I also think you may have trouble with the spout of your pot freezing up do to the copper content of the monotype. It can be frozen out of a melt. It just takes extra time....Wes
Marlin Hunter
04-18-2009, 07:13 PM
+1 for what 454pb said. I also think you may have trouble with the spout of your pot freezing up do to the copper content of the monotype. It can be frozen out of a melt. It just takes extra time....Wes
I think you are right about the spout. I had to disassemble my pot and clean it out.
Is there anyway to remove the copper from the lead?
Can I melt the lead in a large cooking pot on a hot plate and skim or flux the copper out? :confused:
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