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In Reply to: RE: Advice on soldering solid core to stranded. posted by JerryD6 on May 29, 2007 at 07:57:49
I had wondered about wrapping vs parallel in terms of the quality of the connection. Parallel is easier to solder and a better solder joint should give a better connection.
Wrong, the first rule of soldering is to make a good mechanical connection first.
The connection should be able to stand alone without solder.
Do not depend on solder to make the connection.
Follow Ups:
"Wrong, the first rule of soldering is to make a good mechanical connection first."
Yep, and the first rule of posting is to have a good synapse connection which I clearly did not have. I knew this rule, but haven't done any soldering for a while.
The problem is that the space is very tight making twisting the wires difficult. I also considered using split bolts, but couldn't find any that would fit in the available space.
Thanks for the reminder. I'll make sure my finger is stuck tightly in my, er, nose before soldering it.
Regards,
Jerry
You could bend a small folded over hook on the end of the #10 solid conductor. Then fold over the stranded conductor inside the solid hooked conductor. With a pair of pliers close the hooked solid conductor down onto the stranded conductor. Then finish closing the stranded conductor over the solid folded over hooked conductor. Now solder the joint.
... tin the stranded first or when you bend it through the SC loop it will sprout hairs all over the place.
What the hell is a parallel connection, anyway? Solder as glue? Sheesh!
"What the hell is a parallel connection, anyway?"
A parallel connection is when the 2 wires to be connected are twisted together axially before soldering. Of course, this is pretty difficult with 10/12 gauge solid core wire so other methods need to be used.
"Solder as glue? Sheesh!"
How do U think small electronic components are held to a PCB? The electrical connections of the small components certainly aren't mechanically connected to the PCB before going thru the wave soldering machine so in essence, the solder is securing them to the PCB as well as making the electrical connections.
In automated PCB assembly, bigger electrical components may be secured with a tie wrap or hot glue but these are usually done manually after the smaller components are mounted via automated machines.
Hope this helps,
~kenster
How do U think small electronic components are held to a PCB? The electrical connections of the small components certainly aren't mechanically connected to the PCB before going thru the wave soldering machine so in essence, the solder is securing them to the PCB as well as making the electrical connections.
Well not really. A properly preped and inserted component will make a good mechinical connection. Good enough that the board can be turned over without unsoldered components falling out of the PCB. At least thats how parts are preped and placed in our board house before they are soldered (hand or wave soldered).
I am sure many low cost, low quality, consumer grade electronics assembly houses do not do it this well.
I thought you guys were talking about laying the two wires together just for the sake of appearance. Twisting axially I'm familar with as well as solder pads. The former needs a better name.
Thanks.
Great suggestion! A good mechanical connection and can be done within the small space I've got to work in.
Thanks very much.
Jerry
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