[sdiy] One more dumb question about reflow ovens

[George Hearn]

I've never needed to use glue when reflowing smt PCB's in an oven, however I
do usually do one side and then the other (ie paste one side-add
components-reflow, allow to cool, paste the other side-add-components-then
reflow) rather than paste both sides then reflow them together.  Never tried
doing both sides at once, it just seems to awkward putting components on one
side while there are others unfixed on the bottom.  I've never had any bits
fall off the underside of a board when reflowing the second pass, surface
tension seems to keep them in place.  The only caveat is that some
components are fussy about too much heat, particularly plastic film
capacitors, I wouldn't reflow these twice.  George 

-----Original Message-----
From: synth-diy-bounces at dropmix.xs4all.nl
[mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of Tom Corbitt
Sent: 29 September 2008 12:43
To: Synth DIY
Subject: Re: [sdiy] One more dumb question about reflow ovens

If the parts are small enough, surface tension holds them on. On the
big chips, epoxy or some other hi temp glue.

Tom C.

On Mon, Sep 29, 2008 at 6:54 AM, jbv <jbv.silences at club-internet.fr> wrote:
> How do you guys proceed whan you need to solder smt parts
> on both sides of the PCB ?
>
> Thanks,
> JB
>
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