Homebrew PCBs

On Sun, 21 Sep 2003 13:08:17 -0000, Dave Mucha <dave_mucha@...> 
wrote:

>
>> you put the circuit in when it was already hot?
>> but how to get it out not causing the parts to slide around (ok not
> so much
>> a problem with through hole....)
>
>
> Not having any experiance with this method, from what I have read, the 
> surface tension of the solder and the chip will acutually pull the chip 
> into alignment with the center of the pad, trace, whatever.
>
> Much like how solder will create a perfect curve around pins, the 
> strenght of the surface tension is pretty strong.   Remember floating a 
> needle on water in science class ?
>
> But, as was mentioned, movement, shaking and gravity can re-posistion 
> things PDQ !
>
> Why not use an over thermometer and just unplug the oven and wait until 
> it cools enough to let the solder solidify ?
>
>
> Dave
>
>

yes but we definitely don't want to damage any parts by heat.
if you wait until a oven is cold this may occur.

the sliding carriage on the oven i used didn't shake off the parts so i 
think this may be a way to construct it.
not too hard to cut a slot in a small oven and put 2 rails in.. maybe a 
small flap to close the hole (keep heat in).


st
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