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Re: gEDA-user: I need to open and print a PCB createdin ExpressPCB:What are my options?

Peter Clifton wrote:
> On Mon, 2007-01-29 at 21:03 -0500, DJ Delorie wrote:
>   
>>>    I agree 100% here...I actually find through-hole soldering to be
>>> more difficult and tedious than SMT now.  All but the very tiniest
>>> SMT parts can be soldered with a quality iron.
>>>       
>> Hey, *I* can solder even the tiniest ones.  You get your challenge
>> board working yet? ;-)
>>     
>
> I just built one... on 01005 disappeared with a "ping" of my tweezers
> (the tips of which actually dwarfed the component).
>
> The second I nearly got soldered right - but was too much of a
> perfectionist - and tried to re-orient it, eventually breaking the end
> contacts off. Oh.. and I bet it didn't like its time being drowned in a
> ball of solder and stuck to my iron either.
>
> Still.. I cheated anyway, was using a x20 Binary microscope, x40
> sometimes (although that is just too magnified to see what you're doing
> in context - burn marks on thumb to prove it!).
>
> What diameter solder wire do people use? I was using a bent, pointy
> metcal iron with an 0.5mm ish tip, and 0.5mm solder wire. (Some lead,
> tin and copper alloy). I found that the solder balls up on the end of
> the wire to the point where it can dwarf an 0402's contact pad.
>
> Peter Clifton
>
> Electrical Engineering Division,
> Engineering Department,
> University of Cambridge,
> 9, JJ Thomson Avenue,
> Cambridge
> CB3 0FA
>
> Tel: +44 (0)7729 980173 - (No signal in the lab!)
>
>
>
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> geda-user@moria.seul.org
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>   
I used 0.020" Kester 331 solder with a 2331ZX flux pen and a Metcal STTC 
099 (0.060" bent chisel) soldering iron tip. It worked great.

Darrell Harmon



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