I think my lead alloy is crap - Page 3

Sure Shot Mc Gee · December 6, 2017, 07:50 PM

Maybe consider smoking your mold with a candle before pouring it.

Never skim a furnace's surface to cast with.. Always bottom pour or dip melted lead from below the surface.
Old casters Tip: If not wanting to see a chunky dross surface while pouring. Lightly sprinkle Boric Acid Crystals on top of a freshly fluxed lead's surface. If the Boric Acid glass like surface tension isn't broken during the pour. You'll have a no separation of tin >top Rim to pots Empty.
i.e. pile junk bullets and sprew's off to the side till the pot's material is used up so to not break the dross surface tension.

Old 454 · December 6, 2017, 11:20 PM

Yes i flux when i make my alloy.
So i flux that old water pipe before i add my alloy. Then pour into 1 lb bars.
I usually do no more then 40lbs at a run.
I am down to 27 lbs on this last alloy i made... will cast with it till its out. Might just throw it out when i get towards the bottom of the pot since it has contaminates in it that i just cant get out

Old 454 · December 6, 2017, 11:21 PM

Where can i find boric acit crystals at Mr.Magoo

Smoke & Recoil · December 7, 2017, 08:51 AM

You can get boric acid at Walgreens, Rite Aid, CVC etc, etc.

Chainsaw. · December 7, 2017, 10:02 AM

Probably be in the vitamins/health care section.

Old 454 · December 8, 2017, 02:20 PM

Cool... i will be making up new alloy this weekend. I will grab some.
I will be using lino i got in 5 lb bars from roto metals with lead...
Will heavily flux my lead befor adding lino.

Whats a good ratio of lino to lead to gwt a bhn of 12 or 13 ?

USSR · December 8, 2017, 06:03 PM

Quote:

Whats a good ratio of lino to lead to gwt a bhn of 12 or 13 ?

7# pure, 3# linotype, and .25# solder will put you where you want to be.

Don

December 7, 2017, 08:51 AM	#54
Smoke & Recoil Senior Member Join Date: August 23, 2008 Location: East shore of Lake Michigan. Posts: 714	You can get boric acid at Walgreens, Rite Aid, CVC etc, etc. __________________ Sent from my Tandy 1000

December 7, 2017, 10:02 AM	#55
Chainsaw. Senior Member Join Date: September 12, 2015 Location: Issaquah WA. Its a dry rain. Posts: 1,774	Probably be in the vitamins/health care section. __________________ Just shoot the damn thing.

December 6, 2017, 07:50 PM	#51
Sure Shot Mc Gee Senior Member Join Date: January 2, 2012 Location: Minnesota Posts: 3,876	Maybe consider smoking your mold with a candle before pouring it. Never skim a furnace's surface to cast with.. Always bottom pour or dip melted lead from below the surface. Old casters Tip: If not wanting to see a chunky dross surface while pouring. Lightly sprinkle Boric Acid Crystals on top of a freshly fluxed lead's surface. If the Boric Acid glass like surface tension isn't broken during the pour. You'll have a no separation of tin >top Rim to pots Empty. i.e. pile junk bullets and sprew's off to the side till the pot's material is used up so to not break the dross surface tension.

December 6, 2017, 11:20 PM	#52
Old 454 Senior Member Join Date: August 15, 2011 Location: Chesterton Ind. Posts: 822	Yes i flux when i make my alloy. So i flux that old water pipe before i add my alloy. Then pour into 1 lb bars. I usually do no more then 40lbs at a run. I am down to 27 lbs on this last alloy i made... will cast with it till its out. Might just throw it out when i get towards the bottom of the pot since it has contaminates in it that i just cant get out

December 6, 2017, 11:21 PM	#53
Old 454 Senior Member Join Date: August 15, 2011 Location: Chesterton Ind. Posts: 822	Where can i find boric acit crystals at Mr.Magoo

December 8, 2017, 02:20 PM	#56
Old 454 Senior Member Join Date: August 15, 2011 Location: Chesterton Ind. Posts: 822	Cool... i will be making up new alloy this weekend. I will grab some. I will be using lino i got in 5 lb bars from roto metals with lead... Will heavily flux my lead befor adding lino. Whats a good ratio of lino to lead to gwt a bhn of 12 or 13 ?