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 Post subject: Re: Soldered terne metal roofs
PostPosted: Mon Jul 14, 2014 5:36 pm 

Joined: Thu Aug 26, 2004 2:50 pm
Posts: 2094
Location: Northern Illinois
It think what may be missing in this discussion is freight car roofs were typically covered with pre-made panels and seam caps that were galvanized steel, and fit together without solder. They are also relatively easy to replicate, being mostly press brake work.

Mr. Hees is looking to do the ends of a clerestory roof passenger car, if I understand this correctly. Since the terne metal doesn't stretch like canvas, the ends were typically made from a multitude of small pieces, hammered to shape using the wood roof as a form; the lap seams soldered together after the lower edges were tacked to the roof sheathing. This requires a dead soft malleable material, such as the old soft iron terne metal, or perhaps copper.

I'd be interested to know how hard today's copper roof sheet is, and if it can be annealed after lead coating without burning the lead off; both counter productive and a health hazard.

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 Post subject: Re: Soldered terne metal roofs
PostPosted: Mon Jul 14, 2014 11:40 pm 

Joined: Wed Jan 25, 2012 4:01 pm
Posts: 98
Location: Bath, Me
I missed the passenger car part but the WW&Fry cars mentioned have solder joints on the roofs.

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