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Old 11th August 2012   #1
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Drain wire as ground?

Hi guys, I decided to make my own DB25 cables, using Mogami w2934 8 channel snake. One question...

Can I use the drain wire for the grounding pins instead of rolling the shield and using that? The reason I ask is that the rolled ground wire is a bit to beefy to get into the soldering cup. I'm assuming (I know what they say about assume) that it won't matter as long as the drain is soldered to the ground pin on the connector, on each end of the cable. Am I assuming correctly?
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Old 11th August 2012   #2
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Absolutely. I've made thousands of connections with the Mogami drain wire.
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Old 11th August 2012   #3
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Ahhhh ok cool! Thanks Rick! I figured it would work, theoretically it makes sense. Thanks again!
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Old 11th August 2012   #4
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Just remember that heatshrink is your friend
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Old 11th August 2012   #5
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Absolutely I bought plenty of heat shrink in preparation. Everything got heat shrink on it. :-)

Finished the first one actually. It wasn't all that bad to do.

I think I have a leg up on over most though doing the DB25 for the first time. I'm very skilled in TIG welding, carbon steel, stainless, nickel, titanium etc. It's what I did everyday for years, working on nuclear vessels etc. Hands of a surgeon, ehe. :-)
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Old 11th August 2012   #6
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You probably already know this, due to your experience with other welding/soldering, but for others that may reference this in the future.........
When soldering a DB25 or any connector that has plastic for the body where the pins are located it is crucial to keep the pins from heating the plastic to the point where the pins start moving out of position. An easy method is to mate the DB25 with a connector of the opposite sex before starting the soldering. This adds to the heat sinking and physically keeps the pins in position if the plastic gets over-heated.
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Old 11th August 2012   #7
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You probably already know this, due to your experience with other welding/soldering, but for others that may reference this in the future.........
When soldering a DB25 or any connector that has plastic for the body where the pins are located it is crucial to keep the pins from heating the plastic to the point where the pins start moving out of position. An easy method is to mate the DB25 with a connector of the opposite sex before starting the soldering. This adds to the heat sinking and physically keeps the pins in position if the plastic gets over-heated.
Yup I did exactly that, from reading on another post here. Good advice, and makes perfect sense! :-)
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Old 12th August 2012   #8
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Hi
Fixing the opposite half to a decent block of wood stops the whole thing sliding all over the bench too. AND you can write the pinout pattern in big, even in coloured, letters so it makes it quicker still.
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Old 12th August 2012   #9
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Spring type wooden clothes pin seems to help keep things from moving while soldering.
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Old 13th August 2012   #10
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Well here is how the first one came out. I think it came out pretty damn well for my first try at it. :-)
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Old 13th August 2012   #11
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Where else but on GS are we going to be swapping pictures of the insides of connectors! Very nice.
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Old 13th August 2012   #12
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Where else but on GS are we going to be swapping pictures of the insides of connectors! Very nice.
Haha! True! Thanks man! :-)
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Old 14th August 2012   #13
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For holding down things like connectors for soldering, I've always loved my Panavise.

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Old 19th August 2012   #14
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For holding down things like connectors for soldering, I've always loved my Panavise.

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Yep.. I use 1 everyday building our products and doing d-subs it makes life much easier.
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Old 22nd August 2012   #15
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Quote:
Originally Posted by RickS View Post
You probably already know this, due to your experience with other welding/soldering, but for others that may reference this in the future.........
When soldering a DB25 or any connector that has plastic for the body where the pins are located it is crucial to keep the pins from heating the plastic to the point where the pins start moving out of position. An easy method is to mate the DB25 with a connector of the opposite sex before starting the soldering. This adds to the heat sinking and physically keeps the pins in position if the plastic gets over-heated.
Use solder with a high lead content, it melts at a very low temperature and won't damage anything else
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Old 22nd August 2012   #16
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Good soldering tips. Thanks Gents.
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