Mail Archives: geda-user/2012/07/16/16:09:14
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On 16/07/12 19:41, Rob Butts wrote:
> Thanks Ed!
> That is exactly what is happening.
>
> On Mon, Jul 16, 2012 at 10:22 AM, Ed Simmons <ed AT estechnical DOT co DOT uk
> <mailto:ed AT estechnical DOT co DOT uk>> wrote:
>
>
> We had this issue when using the damp sponge to clean the iron.
> Switching to a brass spiral cleaner helped keep the iron clean,
> and when it gets really dull and refuses to re-tin, use something
> like this:
> http://uk.rs-online.com/web/p/soldering-iron-tips-accessories/0226287/
> - this brings up a good-as-new shine on the bit.
>
> Hope that helps.
>
> Ed
>
>
No worries - please make sure you've got good fume extraction - it's nasty!
Are you using no-clean flux? It's really difficult to deal with since
most no-clean flux contains a plasticiser to halt any reaction from the
small remaining amount of possibly active flux after it's been through a
soldering cycle. This gets all over the bit of the iron and quenching
the heat out of the bit with a sponge only makes it stick on harder.
Reworking reflowed boards is such a pain (not to mention ugly and
obvious) we're switching to water soluble fluxes so that we can actually
clean it at the end. Such are the trials of short-run electronics. :-|
If it spits while you feed the solder into the joints, the iron is
probably a bit too hot, but this is hard to avoid without preheating the
whole PCB until it's really toasty. On multilayer boards with pins
connected to the ground-plane this is almost essential in order to be
able to solder at anywhere near the correct temperature.
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<div class="moz-cite-prefix">On 16/07/12 19:41, Rob Butts wrote:<br>
</div>
<blockquote
cite="mid:CALSZ9gp5eTrMGWsU4fXJLJvjBX=kcTwSLNZBFd=FAveZJS8qeg AT mail DOT gmail DOT com"
type="cite">
<div>Thanks Ed!</div>
<div> </div>
<div>That is exactly what is happening.<br>
<br>
</div>
<div class="gmail_quote">On Mon, Jul 16, 2012 at 10:22 AM, Ed
Simmons <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:ed AT estechnical DOT co DOT uk" target="_blank">ed AT estechnical DOT co DOT uk</a>></span>
wrote:<br>
<blockquote style="margin:0px 0px 0px
0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid"
class="gmail_quote">
<div class="HOEnZb">
<div class="h5"><br>
</div>
</div>
We had this issue when using the damp sponge to clean the
iron. Switching to a brass spiral cleaner helped keep the iron
clean, and when it gets really dull and refuses to re-tin, use
something like this: <a moz-do-not-send="true"
href="http://uk.rs-online.com/web/p/soldering-iron-tips-accessories/0226287/"
target="_blank">http://uk.rs-online.com/web/p/soldering-iron-tips-accessories/0226287/</a>
- this brings up a good-as-new shine on the bit.<br>
<br>
Hope that helps.<span class="HOEnZb"><font color="#888888"><br>
<br>
Ed<br>
<br>
</font></span></blockquote>
</div>
<br>
</blockquote>
<br>
No worries - please make sure you've got good fume extraction - it's
nasty!<br>
<br>
Are you using no-clean flux? It's really difficult to deal with
since most no-clean flux contains a plasticiser to halt any reaction
from the small remaining amount of possibly active flux after it's
been through a soldering cycle. This gets all over the bit of the
iron and quenching the heat out of the bit with a sponge only makes
it stick on harder. Reworking reflowed boards is such a pain (not to
mention ugly and obvious) we're switching to water soluble fluxes so
that we can actually clean it at the end. Such are the trials of
short-run electronics. :-|<br>
<br>
If it spits while you feed the solder into the joints, the iron is
probably a bit too hot, but this is hard to avoid without preheating
the whole PCB until it's really toasty. On multilayer boards with
pins connected to the ground-plane this is almost essential in order
to be able to solder at anywhere near the correct temperature.<br>
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