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In Reply to: RE: soldering technique question posted by henryrancourt@att.net on September 07, 2016 at 10:10:33
That is not the best way to solder. The wire should be wrapped around the post so that you have a solid electrical and mechanical connection without any solder at all. Ideally the solder is only there to keep things from vibrating apart and to seal the connection from oxidation.Right now you're using the solder as glue, and listening to the solder, not the wire and the binding post. And if there is even slight movement of the post or wire while the solder is solidifying, you'll end up with a cold solder joint. It may look OK from the outside, but you could have a really poor connection under the surface. Try securing the wire to the binding post, and then put your iron just on the binding post (close to the wire) and heating it until the solder starts to flow on it. Then move the iron so that it contacts both the post and wire. The wire takes much less time to reach the solder melting temp than the post.
Edits: 09/07/16Follow Ups:
Always mechanical connection then solder.
What bcowen explained above is just what was told to us in the electronics tech course. Make the mechanical joint first then solder to lock it in.
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