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Re: How does everyone hold down SMT parts

2004-06-16 by luismoreira_2004

Hi Stefan 

How do you solder using a heat Gun ?
what type do you use and what temperature ?
I never used this method but if I could do it with the heat gun would 
be great. do you have some sort of " how to " guide ?
best regards
            Luis



--- In Homebrew_PCBs@yahoogroups.com, Stefan Trethan 
<stefan_trethan@g...> wrote:
> On Wed, 16 Jun 2004 00:43:26 -0000, mava3941 <mava3941@y...> wrote:
> 
> > How does everyone hold down the SMT parts prior to hand soldering?
> >
> > What type of adhesive is used to hold the SMT parts?
> >
> > Where can I get(I am in the USA) it?
> >
> > Thank you,
> >
> > Martin
> 
> 
> the glue is only needed for industrial appliation when one side is 
> soldered upside down.
> 
> you can use the described solder tacking.
> a member here (sorry, the name ...) has invented a ingenious tool 
> consisting of a wood
> plate and a steel wire spring. the pcb is placed on the plate and 
the 
> spring is bent in an arch.
> one side is fixed to the board, the other presses the part down.
> 
> I would really recommend solder paste and oven / hot air soldering.
> the big advantage is the parts "self align" as they "swim" on the 
solder.
> (solder has a high surface tension).
> it is much faster and the result is better in my opinion (hand 
soldering 
> can shock parts and damage them).
> I use a heatgun, not an oven, to get best results.
> you can build a simple vacuum pickup tool for placement. the paste 
is 
> dispensed
>  from a syringe.
> 
> ST

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