On Fri, 26 May 2006 03:06:21 +0200, Trevor Matthews
<
trev.matthews@...> wrote:
> My next attempt with scrap was going to let the skillet go higher and
> see what happens, but I've tried to melt it with my soldering iron - I
> can move it about and see bright tin underneath, but it doesn't change
> the consistancy of the crust at all. I thought I might try to reflow
> the paste with just my soldering iron and see what happens then as well.
> Unfortunately, I can't run my skillet much higher than 180C without
> leaving the lid on, which means I can't see what happens to the paste as
> it melts, so I can't check to see if the crust is there straight away,
> or if it forms over time (as it would if it melts, then oxidises as
> temperature rises and as time increases)
> thanks for your help
> Trev
OK, if the crust does not melt/reflow when heated with an iron directly,
at normal soldering temperatures, i'm pretts sure something is wrong with
the paste.
I can assure you "working" SMD paste does not form a crust, it will reflow
with a shiny surface and some flux residue.
ST