[PSUBS-MAILIST] lead Smelter

Fri Sep 9 02:52:53 EDT 2016

My wood was pretty dry.I have a friend that ended up with lead on the ceiling of his basementdue to a drop of water in a sinker mold.Below is what they are saying on a boating forum.AlanSodium Silicate "waterglass" used to seal eggs in the shell and to make Hollywood whiskey bottles, and to keep molds from exploding.
 What Mr.Scheuer says. I'll add that you can make your mold out of plywood(3/4" thick) with simple 2X3,2X4 framing stock,depending on how complex the shape.The entire interior of you mold must be generously coated with the water glass and allowed to be perfectly dry before pouring.Simple slab sided ballast keels are easy enough. When you are ready to pour, bring the lead to a liquid state but do not over heat it needlessly.That is, do not wait until you see a purplish sheen on the molten surface.
 Yes, your mold will smoke and there will be charring but it will be minimal and have litle to no effect on the casting itself.Allow for some small shrinkage too. Work smart when dealing with the molten lead.Ie: plenty of ventilation, wear heavy full coverage clothing and stay focused on the task.

      From: Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org>
 To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
 Sent: Friday, September 9, 2016 6:36 PM
 Subject: Re: [PSUBS-MAILIST] lead Smelter

Wood ?   That's interesting.  If the wood was moist do you think it might explode or something? Brian

--- personal_submersibles at psubs.org wrote:

From: Alan James via Personal_Submersibles <personal_submersibles at psubs.org>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
Subject: Re: [PSUBS-MAILIST] lead Smelter
Date: Fri, 9 Sep 2016 01:23:04 +0000 (UTC)

Brian,I made a number of 5kg lead blocks by pouring the lead in towooden molds. The harder the wood the better. Of course the moldsget black & occasionally catch on fire, but they are easy to make & easyto get the lead out of. Alan

      From: Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org>
 To: PSubs <personal_submersibles at psubs.org> 
 Sent: Friday, September 9, 2016 12:54 PM
 Subject: [PSUBS-MAILIST] lead Smelter

Started back working on my sub, it's been so hot that it's impossible to get anything done.  It still hot but should cool down soon.  I cut a big hole in the bottom of my sub ( concrete part)  I can stick my head in there and look around !   I'll be fitting lead in there.   I also fired up that smelter and melted a bunch of lead, works really good !   I didn't do anything with the lead I just wanted to see how long it would take to melt.  Next project is to make metal forms to pour the lead into, and to make my drop weight assembly.    Brian 
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