On 11/04/2010 11:17 PM, DoN. Nichols wrote:
On 2010-11-05, Karl wrote:
On Thu, 04 Nov 2010 18:54:04 -0700, Tim
wrote:

[ ... ]

The pins have a round barrel into which you insert the wire. The
crimper pushes four hardened pins into the barrel, dimpling it and
pressing it onto the wire. Tres fancy. Because the barrel of the pin
extends down into the hole in the housing you can't just crimp it by
crushing it -- you have to do something that'll make it grip the wire
without deforming it to the point where it won't go into its hole.

(I think the barrel is relieved where the crimper dimples it, so any
little 'outies' don't interfere with putting it into the housing).

[ ... ]

Thanks for the info. i can duplicate that easily. I'll drill a hole in
scrap stock to hold the pin. Then a cross hole to hold a center punch.
Put wire and pin in there and give it a slight whack for an indent.
Then solder it.

NO!

1) Note that he said *four* hardened pins -- pushing equally from
four sides at 90 degree intervals, so the pin stays centered.

If you do it with a center punch, things will be deformed in
such a way that they won't go into the hole in the connector
body well.

2) The same with solder. (Aside from not having access for the
solder to the actual joint which is buried down in the tube, not
out where you can get to it.)

And the solder will bulge out as well, to make it not fit well
in the connector body hole.

*And* -- you won't be able to extract pins which wind up in the
wrong hole when (not if) you get one wrong. (You do need the
insertion/extraction tool to go with the pins.)

There are two styles of pins to consider.

Not to mention that the last 1/8" or so of the pin body is supposed to
receive the insulation, for strain relief -- solder a wire straight into
the pin and it'll just break off right at the pin.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

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"Applied Control Theory for Embedded Systems" was written for you.
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