Check your pot for solder contamination.  This analysis will also tell you your % tin.  You may need to
add pure tin to bring your tin percentage back to what it should be.

Gary Camac

Poh Kong Hui wrote:

> Hi All,
>
> I have been working with wave-solder for number of years.
> However, I do not really know what make a solder joint
> looked smooth and bright, and no grainy joint.
>
> I've seen some boards made from certain contractors are
> having a extreme smooth shinning joint. They are using
> same RMA fluxes, foam fluxer. But we copy the same recipe
> and try to duplicate the same kind of joint, it does not
> work at all.
>
> There must be something missing. I hope someone can help
> to advise me how to do that.
>
> Thanks.
>
> Rgds,
> Kong Hui Poh
>
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