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Date: Mon, 16 Jul 2012 15:22:58 +0100
From: Ed Simmons <ed AT estechnical DOT co DOT uk>
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To: geda-user AT delorie DOT com
Subject: Re: [geda-user] Soldering problems
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On 16/07/12 15:03, Rob Butts wrote:
> I have an aide doing some soldering for me.  I found an excellent 
> video on youtube that showed really good techniques on how to solder 
> small surface mount components by applying solder to one side of the 
> pads first then with solder on the tip you simply touch the soldering 
> iron to the junction of each pad and component.
> Friday this was working great.  We had and have the soldering iron at 
> 343C (suggested 650F).  The tip was staying shiney and silver.  Today 
> the solder is turning a dull grey and seems to be oxidizing.  Any 
> suggestions?  Oh and we're using a flux pen.
> Thanks
> PS
> the video is http://www.youtube.com/watch?v=3NN7UGWYmBY
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