This Hobby Is Actually Useful!
cclist at sydex.com
Sat Aug 1 19:28:18 CDT 2015
On 08/01/2015 03:24 PM, Robert Jarratt wrote:
> PS A related question. I struggled somewhat with the Weller Magnastat
> No. 8 tip, when trying to solder leads to the ground plane, I could
> not get the solder to stay molten very long. I was using lead-free
> solder, its melting point is much lower than the temperature which a
> No. 8 tip reaches. The iron is 50W. Clearly the ground plane was
> taking heat away, but is it a problem with the tip not being hot
> enough, the iron not powerful enough, or perhaps some operator error?
I keep my "had it almost as long as my teeth" Weller D550 200/260 watt
gun for the tough jobs requiring a lot of heat in a small
space--soldering to big ground planes, sheet meta, or, as in this
morning, soldering some AWG 12 wire to lugs on a switch. It's fast and
clean and doesn't overheat the workpiece--you can be surprisingly nimble
with one, as compared to, say, an American Beauty 300W iron.
I never use RoHS solder--it simply doesn't wet or flow like 67/37 Sn/Pb
solder. The exception is SMT where components are mounted using solder
paste (powered solder+flux). If I could find some of the leaded stuff,
I'd probably use it.
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