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("Why didn't you say you were sending the wolf? sheee..., <br>
that's all you had to say...!") <br>
<br>
That's the same advice as the two experts I talked <br>
with (you're in good company). One suggested I try <br>
<br>
<a class="moz-txt-link-freetext" href="https://www.mscdirect.com/">https://www.mscdirect.com/</a> <br>
<br>
which has got a huge catalog of various industrial tools <br>
and materials. <br>
<br>
I've got two different copper sheets, both from R. J. <br>
Leahy in SF (specializes in copper, brass, bronze...); <br>
one piece is 30 gauge, the other is 24 gauge, both rolled <br>
and available in 12 inch by <you-name-it) lengths. My <br>
attempts with each are the same. I can get 'em up to bright <br>
red, but the solder rolls off like water.... <br>
<br>
<br>
</font><br>
<div class="moz-cite-prefix">On 10/29/2015 08:44 PM, Winston Wolff
wrote:<br>
</div>
<blockquote
cite="mid:D2A04274-4FA3-4383-8A57-F1390D4E87F2@stratolab.com"
type="cite">
<pre wrap="">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
web: <a class="moz-txt-link-abbreviated" href="http://www.stratolab.com">www.stratolab.com</a>
Play Electropocalypse -- our new game about electricity -- <a class="moz-txt-link-freetext" href="http://stratolab.com/electropocalypse/">http://stratolab.com/electropocalypse/</a>
</pre>
<blockquote type="cite">
<pre wrap="">On Oct 29, 2015, at 1:43 PM, jim <a class="moz-txt-link-rfc2396E" href="mailto:jim@well.com"><jim@well.com></a> wrote:
Thanks, Musti,
What the hey! I'll try it.
On 10/29/2015 08:26 PM, Musti wrote:
</pre>
<blockquote type="cite">
<pre wrap="">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:
</pre>
<blockquote type="cite">
<pre wrap="">
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:
</pre>
<blockquote type="cite">
<pre wrap="">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" <
<a class="moz-txt-link-rfc2396E" href="mailto:jim@well.com"><mailto:jim@well.com></a><a class="moz-txt-link-abbreviated" href="mailto:jim@well.com">jim@well.com</a>
</pre>
<blockquote type="cite">
<pre wrap="">wrote:
</pre>
</blockquote>
<pre wrap="">
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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