Re: Solder paste.. why is it so hard to work with?

On Thu, 01 Mar 2007 13:18:04 GMT, joseph2k <quiettechblue@xxxxxxxxx>
Gave us:

GregS wrote:

In article <qdyEh.1731$jx3.695@xxxxxxxxxxxxxxxxxxxxxxxxxx>, joseph2k
<quiettechblue@xxxxxxxxx> wrote:
Rich Grise wrote:

On Sat, 24 Feb 2007 12:04:49 +0000, jasen wrote:
On 2007-02-24, Rich Grise <rich@xxxxxxxxxxx> wrote:
On Thu, 22 Feb 2007 17:53:49 -0800, 911review.org wrote:

try cleaning the board well with alcohol, then you can minimize the
amount of flux you need.
Brad
http://batcave911.blogspot.com

Just wondering - what would happen if you took the bare board, cleaned
it up with some fine steel wool, preheated it to, say, 250F, and
plopped it on top of a puddle of molten solder? Would it tin the whole
thing?

not without flux.

Yeah, sorry I neglected to mention that. When I was working for that
battery charger guy, they'd crimp lugs onto the wires (up to like AWG 2
and such), verify a good crimp, and dip them in a solder pot. But before
we dipped them in the solder, we'd dip them in a little jug of liquid
flux.

I had heard that crimps shouldn't be soldered, but they never seemed to
have any problems. Probably because of the crimp - all the solder would
do is exclude air; it wouldn't actually be part of the circuit. (If we
just soldered the big fat wires into the lugs we wouldn't need fusible
links. ;-) )

Cheers!
Rich

Actually the solder was an anti-corrosion coating. Other than that, crimp
connections do not benefit from soldering.


Except the ones I find all the time in consumer equipment.

greg

Well yes, crimping does benefit from properly trained assemblers with
properly operating tools.

Read it again, dingledorf. He said that crimping does not benefit
from soldering afterward, and for small gauges, it is 100% accurate.

Of course this is easily detectable as being more expensive ("What you mean
'crimp tool has limited life', just squeeze harder."

We don't need a primer on proper crimper utilization. Modern
crimpers are far more accurate than those of even ten years ago.

Not talking about mil pin crimpers here, just the run of the mill
stuff.

"But it is an air
operated tool, squeezing harder does not apply.

You assume a lot.

The jaws have a lifetime
of about 10,000 crimps, ane then should be replaced."

Crimping machines as well as DIEs vary.

"You crazy, i can't
afford down time 6 times a day. We replace once a month, like always.")

You forgot to add the racist inflection notation, but I still caught
you at it.
.

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