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texasmac
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Rendering Lead
Mar 13th, 2015 at 1:41am
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Hey guys,

Just thought I’d post some photos of the 360 lbs of pure lead I just finished melting down from  six 60 lb ingots into much more manageable 1 lb ingots.  I got a 1-time deal on the lead & could not pass it up.  You can see the stack of large ingots in the top left hand corner of the photo along with about 1000 lbs of wheel weight lead which is also in 1 lb ingots.

As noted in the photos I used an outdoor cooker for the heat source but what made it relatively easy was the very large 16 qt. cast iron pot I picked up from Academy Outdoor Sports for $39.95, a heck of a deal since everyone else wanted close to twice or 3X as much, and shipping was free.  It’s actually a 14” (top inside diameter) by 6.5” deep, pre-seasoned Dutch oven & came with the lid, which was of no use for this project.  The negative when using a large pot is it radiates a lot of heat, requiring longer time to come up to lead melting temp.  But when handling 60 lb or larger ingots a large heavy pot is much more stable (read safer).  It fit the cooker perfectly.  I had 180 lbs of molten lead in it at one time.

If you’re wondering where the ingot mould came from?  It’s a standard RCBS mould with a coil spring ventilated handle welded on that I cut off from a cheap Harbor Freight welding hammer.  Works great, speeds up the process and is very stable.  Anyway, I’m now in great shape with plenty of pure lead and a bunch of tin.  It was hell trying to cut a few lbs off the 60 lb ingots.

The whole process went very smooth, no hiccups, no splattering or split lead.  The folded red towel in the photo was soaked with water and used to quickly cool down the ingot mould until the lead hardened sufficiently to dump on the garage floor.  The mould was supported by the edge of the pot while filling it with the 2 lb dipper.  Gloves, boots, blue jeans, long sleeve heavy cotton shirt, safety goggles were the norm.

Ran out of room so more comments and photo in next post.
Wayne
  

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texasmac
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Re: Rendering Lead
Reply #1 - Mar 13th, 2015 at 1:42am
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BTW, this also resulted in a short experiment to determine how effective a solution of hydrogen peroxide & vinegar was at removing lead.  Many of you have likely head of this technique to remove lead from firearm bores.  I’ll start a new thread with the results tomorrow when the experiment is complete.

Wayne

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bnice
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Re: Rendering Lead
Reply #2 - Mar 13th, 2015 at 8:17am
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I look forward to see how peroxide and vinigar works. Also I found a pair of large commercial muffin plates (like truck stop or SAMs have) for moulds. They fit perfect in lee ir lyman 20 lb opening. Each pan holds 12 ingots
  
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Pentz
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Re: Rendering Lead
Reply #3 - Mar 13th, 2015 at 9:45am
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Piker....that's only 11,550 200gr bullets....
I scored some 32-lb isotope cores that assayed a perfect 20:1.  These will become ingots for my 32-20 CPA.  Good Will pewter hunting has supplied a little over 10 lb of pewter.  My backup range scrap lead stash is down to 800 lbs or so, I gave up calculating.   Wink
Watch that peroxide/vinegar combo, it is heck on blueing.
  

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John Boy
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Re: Rendering Lead
Reply #4 - Mar 13th, 2015 at 9:49am
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Wayne - a  nice neat representative picture of your melting process and results
* Suggestion: Drill holes along the edges of your dross spoon.  Allows the melt to drain back into the pot and just dross to stay in the spoon
BTW - is that a tall scotch & water in the glass?  Grin
  
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boats
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Re: Rendering Lead
Reply #5 - Mar 13th, 2015 at 10:15am
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Good post Wayne

Last time I did a big lead rendering job, pouring 16 oz cannonball trolling sinkers, borrowed a plumbers pot. It had been used to pour babbit bearings. One we used was gasoline, new ones are propane. I think you can rent them too.

It was real dirty lead, drain pipe and flashing from old houses, plumbers pot heats fast and hot. We were not worried about quality, speed was the objective. it helps a lot to have multiple molds large block takes a long time to solidify. I if the lead is dirty best pour into ingots then flux again and alloy as a 2nd operation

my 2 cents worth

Boats
  
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marlinguy
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Re: Rendering Lead
Reply #6 - Mar 13th, 2015 at 2:47pm
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I've got a 5 gallon pail of range lead retrieved from my club's indoor range. It's full of wood splinters, burnt powder, and assorted gunk. I tried melting it down once, but was just too much smoke. One of these days I need to wash it, and figure out how to drain the water, but save the lead. Then let it dry long enough to be sure no water remains.
Just never got around to it, since I have 500+ lbs. of clean lead, so the dirty just sits in a corner.
  

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art_ruggiero
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Re: Rendering Lead
Reply #7 - Mar 13th, 2015 at 6:12pm
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marlin  just drill some small holes in the bucket when done washing   art
  
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texasmac
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Re: Rendering Lead
Reply #8 - Mar 13th, 2015 at 7:48pm
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Pentz wrote on Mar 13th, 2015 at 9:45am:
Piker....that's only 11,550 200gr bullets....
I scored some 32-lb isotope cores that assayed a perfect 20:1.  These will become ingots for my 32-20 CPA.  Good Will pewter hunting has supplied a little over 10 lb of pewter.  My backup range scrap lead stash is down to 800 lbs or so, I gave up calculating.   Wink
Watch that peroxide/vinegar combo, it is heck on blueing.


Or 6300 of the 400 gr .40 caliber that I typically shoot.  And about 6 years worth at the rate I currently use them.

Wayne
  

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texasmac
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Re: Rendering Lead
Reply #9 - Mar 13th, 2015 at 8:05pm
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Quote:
Wayne - a  nice neat representative picture of your melting process and results
* Suggestion: Drill holes along the edges of your dross spoon.  Allows the melt to drain back into the pot and just dross to stay in the spoon
BTW - is that a tall scotch & water in the glass?  Grin


John, the holes are a good idea.  I normally gather up the dross to the side of the pot than remove it by scraping a spoon full up the side of the pot while holding it at an angle - hardly ever get any lead with it but it takes a little more time than your approach/suggestion.

Concerning that glass, another excellent idea but I have never developed a taste for scotch.  Now then, a steady diet of vodka tonics with a slice of lime or a few margaritas would make the rendering process a little more adventurous.  Roll Eyes Grin

Wayne
  

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texasmac
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Re: Rendering Lead
Reply #10 - Apr 5th, 2015 at 10:25am
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Just thought I'd give you guys another option.
Wayne

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marlinguy
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Re: Rendering Lead
Reply #11 - Apr 5th, 2015 at 10:32am
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art_ruggiero wrote on Mar 13th, 2015 at 6:12pm:
marlin just drill some small holes in the bucket when done washing art


I have to actually remove the lead from the bucket to wash it, as leaving it in the 5 gallon bucket traps too much debris. A lot of wood splinters from target holders, and dirt. The burnt gunpowder will wash out, but the larger stuff is trapped under the 80-100 lbs. of lead in the bucket.
I use a 2nd bucket filled half full of water, and dump scoops of lead into the water, so the debris floats to the top. Then skim off the debris. I dump the lead and water out on a sheet of plywood to dry when it gets a few inches deep in the bottom. If I let it get much deeper, it's hard to dump or work with. This is always a summer, dry day job.
  

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