solder wire joint

A lot of problems I have seen is people have no idea how to solder anymore.
They take two pieces of stranded wire, lay them together, and take the iron and
the flux soilder and heat the begabbers out of everything. Called cold solder
joints or "lapped" joints. If you want to see some pretty nice soldering watch
this video. Guy does a fairly nice instruction job. Only thing he needs a
better solder iron cause his is pooping out. I even learned a new trick. Have
used lineman joints for years and then double layer with shrink tube. Never
ever had a failure.
How to solder joints.
 
It sort of depends on the application. Soldered splices in house wiring went out of fashion many years ago, for the simple reason that wire nuts are fast and reliable. The houses where I've found solder and tape connections were originally wired in the twenties.

For automotive and aircraft applications, I think solder fell out of favor in WWII. Small-gauge stranded conductors tend to break under vibration if they're terminated with a soldered connection.

In electronics, soldered connections are still commonly used, particularly for attaching wires, connectors and components to printed circuit boards. Note that these are seldom soldered by hand; instead the entire circuit board is soldered using a "wave" soldering machine, where PC boards are passed over a pool of molten solder.
 
Most all commercial and industrial is crimp now, it it needs sealed, there are silicone coverings if sealing is needed.
 

I still solder and use heat shrink tubing over the finished joint. I also taught my son the proper way to solder. I learned the proper method in the Army a long time ago, when I worked on communications equipment.
 
Not sure what application you're talking about. In the early 70's, a guy I worked with built a new house. He hired an old electrician to wire it, and that guy used a solder pot and a "dipper" for lack of the proper name, to solder the junction box connections. It was nice to see how the old guys used to do things, but I see no advantage over using wire nuts.
 
I know someone who cuts extensions cords with hedge trimmer.
Usually the cord gets cut close to the end where it plugs into
the trimmer, go figure.

So I strip back about 5 inches of the outer protection on both
ends. Then I stagger the solder joints incase the electrical
tape fails there is no way they can short out. I use tape so I
can also put back some of the outer protection of the cord.

The only time my repair fails is when she uses the hedge
trimmer. Cord get shorter each time.
 
.....For automotive and aircraft applications, I think solder fell out of favor in WWII. Small-gauge stranded conductors tend to break under vibration if they're terminated with a soldered connection.

For aircraft, soldering is still used. I did the annual training/testing/re-certification at the company I retired from ~5 years ago. We made lots of wire harnesses for sub-assemblies on both military and commercial aircraft.
 
didn't know it had ended. i did those same soldering samples in grade ten electronic's class in 1973.
 
1912?
1492?
Huh?
2020
when the scotchlock was invented maybe
for those that know the scotchlock
I see some close within present view one of which I propose or intend to use
no solder required
 
(quoted from post at 10:07:55 01/20/19) 1912?
1492?
Huh?
2020
when the scotchlock was invented maybe
for those that know the scotchlock
I see some close within present view one of which I propose or intend to use
no solder required

I don't think my Dad used anything but those Scotchlock things and every single wire would be a corroded mess after a couple winters. I admit to using some for sheer convenience sake, but I am certain to enclose it in shrink wrap if I have it or inside a gob of silicone caulking if I don't. Tape won't cut it in areas where they salt the roads.
 
Crimp connections, can't be sealed very good from road salt on road vehicle operations. So soldering is about the only way to get long term strong sealed connections. I use soldered then that liquid tape for wires. Also shrink tube abd just plain old electrical tape. If just want to get home twist and tape.
 
(quoted from post at 14:07:55 01/20/19) 1912?
1492?
Huh?
2020
when the scotchlock was invented maybe
for those that know the scotchlock
I see some close within present view one of which I propose or intend to use
no solder required

My son bought a used trailer a couple of years ago, and the previous owner had "rewired" the thing using those blasted things. Of course, neither the lights nor the brakes, were working right. We cut every one of those pieces of crap out and soldered the connections correctly. Now, everything works.
 

Its rare I solder use to its a waist of my time its a feel good thang... Size the connector to the wire with the proper crimp tool use a GOOD! heat shrink crimp connector good as new...

Go out to your $70K truck are you $100K tractor and come back and tell me how many soldered wires you can find...

Its a proven fact a proper crimp is superior but do your feel good thang if it makes you happy,,,
 
The phone company quit soldering wire joints decades ago and switched to crimp connections. Why? Because when you solder copper wire it hardens a short length of the wire end and then makes it more prone to breakage at the high stress point where it joins the connector. Modern gas tight crimped connections do not have these problems and are not prone to corrosion at the joint. Especially the gel filled connectors. That being said, your typical crimp connector is not gas tight.

Cliff(VA) now NC
 
When I built my trailer I didn't solder anything. What I did was twist 6 times tight as I could, smear it up real good with liquid tape two coats, then heat shrink, then tape. I wanted to make sure moisture didn't get in best I could. For the electric brake wires I ran them inside a flexible plastic tube to spread the bend over a longer length of the wire.
 

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