#7080995 - 11/16/12 06:54 AM
Re: Got a question about wheel weights...
[Re: MColeman]
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Campfire Regular
Registered: 04/30/10
Posts: 512
Loc: Middle Tennessee
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Mickey, I've seen your recent questions and thought you were a newbe like me and maybe we could learn casting together but now find out you are an "old hat" at it. I think I read somewhere that the melting point of lead and zinc are about 50 degrees different and that zinc is higher....so keeping temp just high enough to melt the lead you can skim the zinc off the top? I'm sure someone who knows much more than me will be along soon to answer for both of us. I hope to cast my first 30-30 bullets soon.
Good Luck to you, Rick
Edited by RickinTN (11/16/12 06:55 AM)
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#7083148 - 11/16/12 07:40 PM
Re: Got a question about wheel weights...
[Re: MColeman]
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Campfire Guide
Registered: 12/13/08
Posts: 2890
Loc: Goliad, TX
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My understanding is that the zinc is corrosive in some manner and is undesirable in the the alloy. I have always heard that it makes for ugly bullets due to not filling the mold properly. I don't really know because I don't allow it to melt in the mix. I get just enough heat to melt the lead and everything else floats. When I do large quantities I just scoop everything off that doesn't melt right away.
Alan
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Food is at the core of Hunting and Fishing - Rebecca Gray
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#7083361 - 11/16/12 09:07 PM
Re: Got a question about wheel weights...
[Re: Alan_R_McDaniel_Jr]
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Member
Registered: 12/16/05
Posts: 155
Loc: Iowa 52732
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The bullets are not filling out because of the zinc. Take what ever lead you have melted to the scrap yard and get rid of it.
Now you are going to have to sort all of the WW. I use a large pair of side cutters. The zinc will not cut. Find a radio station you like and sit down and try to cut each one. You don't have to cut them in half. Just see if the cutter will cut into them. The zinc will feel like trying to cut a 1/2" bolt. It will hardly even scratch it. There is also iron WW. The zinc ones will be marked Zn, the Iron ones will be marked Fe. But not always. There is no way around this. This is all from the tree huggers.
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#7083678 - 11/17/12 04:52 AM
Re: Got a question about wheel weights...
[Re: MColeman]
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Campfire Outfitter
Registered: 08/31/02
Posts: 7732
Loc: Arkansas
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My very limited experience with casting wheel weights led me to watch the pot carefully when I put the weights in, and you could tell the slow melters and remove them. Once I had some melted lead in the pot I would add one weight at a time, lead would melt quick and the zinc not, and I would remove it. miles
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Look out for number 1, don't step in number 2.
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#7083680 - 11/17/12 04:54 AM
Re: Got a question about wheel weights...
[Re: milespatton]
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Campfire Outfitter
Registered: 08/31/02
Posts: 7732
Loc: Arkansas
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I also noticed a rubbery like substance in the skim and thought that maybe some had a thin rubber coating, but it could have been road grime. miles
_________________________
Look out for number 1, don't step in number 2.
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#7083945 - 11/17/12 06:56 AM
Re: Got a question about wheel weights...
[Re: milespatton]
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Campfire Outfitter
Registered: 12/16/00
Posts: 9308
Loc: Asheville, NC
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zinc is not corrosive, it just causes wrinkles in the cast bullets and voids. These voids are detrimental to any type of accurate shooting.
If you keep your melt below the melting point of zinc it will float on the top and can be skimmed off easy enough. Once it's melted in, well, time to get new lead. Just keep the melt below 700° F and the zinc won't melt in.
I've done this numerous times, a thermometer helps and heat slowly, you'll be fine.
_________________________
Whatever you are willing to put up with, is exactly what you will have.
When your ship comes in. ... make sure you are willing to unload it.
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