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slughammer
03-14-2001 09:06:16
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Re: Melting lead in reply to Jerry Bliler, 03-12-2001 08:54:19
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Jerry, Can't find where I wrote it down, but pure lead is about .40 lb/cu in. I'm sure wheel weights are less because of the alloying, but figuring at least .30 lb/ cu in., a 12 inch round 2in thick would weigh 68lb. (pure lead would weight 90lb) My experience with lead is based on hand casting scrap lead into pistol bullets, right now I would estimate over 10,000. (200 lb) Don't like the idea of having water anywhere near your operation. Let your lead cool naturally and you will end up with just as strong of a product without the risk of an explosion. Lead will quench and harden slightly, but you run the risk of surface cracking on such a large item, wheel weights will actually age harden over a period of time so let alchemy run its course. I have melted wheel weights and did not wash prior to melting, anything that would come off when washing will come off when fluxing, so I never did the extra step but may consider it to keep my pot cleaner. My usual casting temperature for good bullets in a warm mold is 675 degrees. Use the wax, and a large heavy spoon to skim off the clips and dirt. Flux and skim several times, you can't over do it. Throw the junk into a coffee can for hazardous waste disposal. Lead is probably the least harmful component you'll find when melting wheel weights,just think about all the toxic stuff that is stuck to them, so as mentioned don't breath. Also safty glasses and heavy gloves are a must. I once used a heavy aluminum pot to melt 100 lbs of wheel weights at one shot, the pot had two handles that were riveted on. That is the last time that pot will be used, I am concerned with cracking the pot itself, I will be fabricating or aquiring a heavy steel pot for my next batch. The handles suffered significant damage from the fire. Based on the dangers of transporting molten lead,(ie. handle failure,spilling etc.) I recommend letting the brew cool right where you heated it. Knock it out of the pot the next day. Good Luck-Slughammer
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