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  #11  
Old 11-04-2015, 09:15 AM
Marc Bourget Marc Bourget is online now
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Dams were made with some crs sheet. I inspected them closely. They appeared to be assembled with small, simple tack welds from a TIG.

Some care was taken with matching the dams to the part sought to be copied. Wasn't "light proof" matching, but it was close, considering the viscosity of the molten Kirksite.

Keep in mind, Kirksite, top and bottom, (because of its toughness) for forming steel. For aluminum, the aircraft factories frequently used Zinc for a punch and Lead for a die in drophammers.
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  #12  
Old 11-04-2015, 10:15 AM
crystallographic crystallographic is offline
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Quote:
Originally Posted by Marc Bourget View Post
For aluminum, the aircraft factories frequently used Zinc for a punch and Lead for a die in drophammers.
Drop hammer shops in aircraft plants also use "ultra-cal" and "hydra-cal" - and US Gypsum used to offer the spec sheets for their products in that application.
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  #13  
Old 11-04-2015, 01:10 PM
sblack sblack is offline
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Well, um, trying to convey the "rough" physical aspect of the process. While studiously avoiding the more pedestrian, though shopworthy term, "w*nk."
Kent sold me a meco torch. I couldn't get the connections to seal and being brass I was afraid to bear down and strip the threads. I emailed Kent and he said "go ahead, really scrunk it down - at my risk".

Scrunk? Funny how you can hear a word for the first time and just know what it means. I guess it did sorta make a scrunking sound when I torqued it. So I did, and it sealed up just fine.

Kent is a cornacopea of nomenclature.
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  #14  
Old 11-04-2015, 01:27 PM
sblack sblack is offline
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Bob one last question about the Kirksite demo: are the dies simply bolted to the mounts that go into the pullmax die holders i.e. are they drilled and tapped?

thanks again for those pictures.
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  #15  
Old 11-04-2015, 02:31 PM
Bad Bob Bad Bob is offline
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I think they were tapped.
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