i beleave that there is a specieal glue that is used
for holding these down i have used pin head sized
drops of super glue gell just make shure in a well
ventelated area the heat will set them in place
i have encounterd the special glue they use when
reworking smd boards so i know it is used somtimes
--- 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
>
>
>
>
>
>
>
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