Saw these on Lazada has anyone tried them?:- https://www.lazada.co.th/products/100-heat-shrink-splice-connector-26-10-awg-i120342822-s125488901.html?spm=a2o4m.searchlist.list.11.740850eat4T97L&search=1

 

 

Looks like you can join the wires with the built in solder and get a waterproof connection.

 

I just wonder how it works with the heat not melting before the solder has done it's work 

 

Neat idea if it works as advertised  

Call me a skeptic but cold solder joints are often found when the wire is actually heated - this appears to just heat the solder so not very hopeful of a good connection.  

These do work. 

 

The wire must be clean and bright, I've always added a bit of flux to the wire and twisted the ends before inserting it (slide the joiner onto the wire before twisting) and you have to get things a lot hotter then you imagine to get the solder to flow, you really do need a heat-gun.

 

Heat the middle bit first and get the solder moving before warming to the outer ends.

 

To be honest, it's just as quick to solder the wires and use normal (or adhesive lined) heatshrink.

I've used similar connectors a long time ago especially to terminate the shields on coaxial cable that need to be inserted into a connector..  They will only work if you have the proper tooling, a real heat gun, not a hair dryer or a cigarette lighter.  They are called solder sleeves.

Seems like the traditional crimp connection with heat shrink is still the easiest and least complicated.

 

 

10 minutes ago, Daffy D said:

Seems like the traditional crimp connection with heat shrink is still the easiest and least complicated.

 

 

not quite. 

iv used sealable conectors on marine applications for years .

so good that the navy only uses them . they consist of a round button , bout one centimeter wide ,that is filled with silcon.

you place the two ends into the button then crimp it .

a metal bridge then clamps the conection ,and the silicon seals it all in one go.

22 minutes ago, Daffy D said:

Seems like the traditional crimp connection with heat shrink is still the easiest and least complicated.

 

 

Actually, IMHO, the best connection is tinning the wires and then making a secure mechanical connection before actually soldering them and adding heat shrink protection.

 

Or you could use the Thai way of wiring lights for parties.  Safety pins run thru the wires that need to be connected and then run through the supply wires and then closing the pin.