[Noisebridge-discuss] soldering copper sheet metal

jim jim at well.com
Sun Nov 1 02:56:19 UTC 2015


     Thanks for the tip. Tomorrow's picture taking
time and also a four kinds of glue trial. I'll
definitely try to get in touch with flgs.


On 10/31/2015 03:46 PM, maestro wrote:
> maybe try contacting the folks that make metal sculptures @ flaming 
> lotus girls in S.F. ...
> they're a S.F. troupe and pretty damned skilled and knowledgeable 
> working with all kinds of metals and different heat(s)...
>
> <<http://flaminglotus.com/about-flg/>>
>
>
> good hunting...
>
>
> message ends.
> _____________
>
> On Thu, Oct 29, 2015 at 2:06 PM, jim <jim at well.com 
> <mailto:jim at well.com>> wrote:
>
>
>
>        ("Why didn't you say you  were sending the wolf? sheee...,
>     that's all you had to say...!")
>
>         That's the same advice as the two experts I talked
>     with (you're in good company). One suggested I try
>
>     https://www.mscdirect.com/
>
>     which has got a huge catalog of various industrial tools
>     and materials.
>
>         I've got two different copper sheets, both from R. J.
>     Leahy in SF (specializes in copper, brass, bronze...);
>     one piece is 30 gauge, the other is 24 gauge, both rolled
>     and available in 12 inch by <you-name-it) lengths. My
>     attempts with each are the same. I can get 'em up to bright
>     red, but the solder rolls off like water....
>
>
>
>     On 10/29/2015 08:44 PM, Winston Wolff wrote:
>>     How about finding different copper sheet? I can only think of not enough heat or some contaminant in the copper.
>>
>>     —Winston
>>
>>     Winston Wolff
>>     Stratolab - Games for Learning
>>     tel:(917) 543 8852 <tel:%28917%29%20543%208852>
>>     web:www.stratolab.com <http://www.stratolab.com>
>>
>>     Play  Electropocalypse -- our new game about electricity --http://stratolab.com/electropocalypse/
>>
>>>     On Oct 29, 2015, at 1:43 PM, jim<jim at well.com> <mailto:jim at well.com>  wrote:
>>>
>>>
>>>     Thanks, Musti,
>>>          What the hey! I'll try it.
>>>
>>>
>>>
>>>     On 10/29/2015 08:26 PM, Musti wrote:
>>>>     Hi Jim,
>>>>
>>>>     depends on what you are trying to do, but maybe just use spot welding?
>>>>
>>>>     You might as well try Aluminum soldering flux, which enables to solder
>>>>     it like a charm, if you ahve the right thin it will . This flux smells
>>>>     really really bad.
>>>>
>>>>     Kind regards,
>>>>     Musti
>>>>
>>>>     On 29.10.2015 21:18, jim wrote:
>>>>
>>>>>          Nothing's working. I talked to two different
>>>>>     experts, one a plumber the other a bike mechanic.
>>>>>     both are surprised and both guess that the copper
>>>>>     sheets (12" wide copper rolls I bought from R. H.
>>>>>     Leahy in SF) must have a tiny amount of oil that's
>>>>>     embedded a couple or atom's distance into the
>>>>>     surface of the copper.
>>>>>          I've tried various fluxes, washed 'em with
>>>>>     borax, lye, sodium carbonate (all high base), and
>>>>>     with alcohol, paint thinner, acetone, and muriatic
>>>>>     acid. I've scoured 'em with fine and with coarse
>>>>>     sand paper, by hand and with an electric hand
>>>>>     sander.
>>>>>          My heat sources have been a propane torch and
>>>>>     also a 950 degree soldering iron. I've used tin-
>>>>>     lead and also silver solder.
>>>>>
>>>>>          The result is that the solder burns and
>>>>>     browns with what seems like little disks from
>>>>>     popped bubbles and all solders bead up and roll
>>>>>     off.
>>>>>
>>>>>          Somebodies know how to work with sheet copper
>>>>>     to make rain gutters, art, etc.
>>>>>          I've looked into copper glues, and reviewers
>>>>>     warn that some products are of poor quality, other
>>>>>     products work but cannot withstand mechanical
>>>>>     stress....
>>>>>          I'm gonna try adhesive copper tape, maybe
>>>>>     double it up if I need the strength.
>>>>>
>>>>>
>>>>>
>>>>>     On 10/25/2015 11:58 PM, Cere Mona Davis wrote:
>>>>>
>>>>>>     There is a special kind of flux for solding to copper. . Seen it at
>>>>>>     ace hardware.  Alternately, you can possibly try borax with a little
>>>>>>     water.
>>>>>>
>>>>>>     On Oct 25, 2015 4:37 PM, "jim" <
>>>>>>     <mailto:jim at well.com> <mailto:jim at well.com>jim at well.com
>>>>>>     <mailto:jim at well.com>
>>>>>>>     wrote:
>>>>>>              I've soldered electronics and plumbing and
>>>>>>          am stuck trying to solder copper sheet metal.
>>>>>>          I've used a soldering iron and a propane torch.
>>>>>>          I've used alcohol, acetone, and paint thinner
>>>>>>          to clean the copper as well as fine and coarse
>>>>>>          sandpaper to clean the surfaces. I'm using
>>>>>>          electronic flux (haven't yet tried plumbing
>>>>>>          flux).
>>>>>>              The soldering is not working: solder does
>>>>>>          not flow or adhere to the copper, and there's
>>>>>>          a brown residue that appears after heating.
>>>>>>          Using a torch for forty or fifty seconds
>>>>>>          results in flame that does not immediately
>>>>>>          expire.
>>>>>>
>>>>>>              Anybody got tips?
>>>>>>
>>>>>>
>>>>>>
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>>>>>>
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