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#1
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Stretching lead
While stretching some lead this afternoon I got to wondering, by how
much should you stretch it anyway? The way my homebrew stretcher works it yanks it by about 3 to 4 inches. That's enough, too much or just about right? From the classes I took some time ago I remember you do it to the make the came stronger, smooth out the nicks etc. Wondering though, would the lead to to "unstretch" itself, thereby tightening everything in the process? Bart. custom compensated banjo bridges, tabs, stained glass: www.haruteq.com **may your moments of need be met by moments of compassion** |
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#2
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you're work hardening it by stretching it. no, it won't unstretch.
"Bart V" wrote in message ... While stretching some lead this afternoon I got to wondering, by how much should you stretch it anyway? The way my homebrew stretcher works it yanks it by about 3 to 4 inches. That's enough, too much or just about right? From the classes I took some time ago I remember you do it to the make the came stronger, smooth out the nicks etc. Wondering though, would the lead to to "unstretch" itself, thereby tightening everything in the process? Bart. custom compensated banjo bridges, tabs, stained glass: www.haruteq.com **may your moments of need be met by moments of compassion** |
#3
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"Bart V" wrote in message ... While stretching some lead this afternoon I got to wondering, by how much should you stretch it anyway? The way my homebrew stretcher works it yanks it by about 3 to 4 inches. That's enough, too much or just about right? From the classes I took some time ago I remember you do it to the make the came stronger, smooth out the nicks etc. Wondering though, would the lead to to "unstretch" itself, thereby tightening everything in the process? Bart. Conventional wisdom is to stretch it till it gets straight. That may be 1/2" or a few inches. Stretching it does almost nothing to add strength. An urban legend. -- JK Sinrod NY Sinrod Stained Glass www.sinrodstudios.com Coney Island Memories www.sinrodstudios.com/coneymemories |
#4
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"jk" wrote in
et: "Bart V" wrote in message ... While stretching some lead this afternoon I got to wondering, by how much should you stretch it anyway? The way my homebrew stretcher works it yanks it by about 3 to 4 inches. That's enough, too much or just about right? From the classes I took some time ago I remember you do it to the make the came stronger, smooth out the nicks etc. Wondering though, would the lead to to "unstretch" itself, thereby tightening everything in the process? Bart. Conventional wisdom is to stretch it till it gets straight. That may be 1/2" or a few inches. Stretching it does almost nothing to add strength. An urban legend. JK, can you clairify that statement please? Lead does indeed stress harden by stretching so I am not sure what you mean by 'strength'. Most all metals can be hardened by bending or stretching. This is the reason they get brittle and break. Regards, G^2 ----== Posted via Newsfeed.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeed.com The #1 Newsgroup Service in the World! 100,000 Newsgroups ---= 19 East/West-Coast Specialized Servers - Total Privacy via Encryption =--- |
#5
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In article , Glenn@lg-
studios.no.frigging.junk.com says... [...] JK, can you clairify that statement please? Lead does indeed stress harden by stretching so I am not sure what you mean by 'strength'. Most all metals can be hardened by bending or stretching. This is the reason they get brittle and break. A good article on lead stretching and why it doesn't really add strength is at http://tinyurl.com/zfba The short version (as I understand it): the hardening is temporary, and you're actually making the lead weaker in the long run if you stretch it too much. cheers, Marc |
#6
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Another (lengthy) posting on the subject is here
http://www.warner-criv.com/glasschat...1&group=0&srch Elizabeth in UK |
#8
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Sinrod has it right - it's an urban legend that stretching lead
increases it's strength. The only reason to stretch lead is to straighten it. If you didn't mangle it, there's no reason to stretch it. Not only does stretching NOT strengthen lead - it permanently weakens it. If you use the lead as it comes from the box, you'll have a stronger panel than if you stretch it before using it. Dennis Brady DeBrady Glass http://www.debrady.com |
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