Homebrew PCBs

I would check the data sheets for your paste and your parts and see
what kind of heating curve they use for re-flow soldering.  Also, make
sure you don't bake your parts to the point of no return.  There
should be a pre-heat ramp up in temperature and it usually plateaus
for pre heating then rises up to reflow temp and then tapers back off.

On Sat, Apr 4, 2009 at 5:04 AM, Jim Lewis <jim.lewis@...> wrote:
> Thanks for all the tips. I pretty sure it's moisture in the paste. And it was much worse on a high-humidity day but not sure if that was a coincidence. Has anyone else noticed a connection to humidity? Does anyone know the ideal pre-heat temp and duration per the mfg?
>
>
-- 
Erik L. Knise
Pacific Shipping Company
Seattle, WA