[Noisebridge-discuss] soldering copper sheet metal
jim at well.com
Thu Oct 29 20:43:04 UTC 2015
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,
> 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
>> 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
>> 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
>> 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
>>> On Oct 25, 2015 4:37 PM, "jim" <<mailto:jim at well.com>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
>>> 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
>>> Anybody got tips?
>>> Noisebridge-discuss mailing list
>>> Noisebridge-discuss at lists.noisebridge.net
>>> <mailto:Noisebridge-discuss at lists.noisebridge.net>
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