Review on 120PCS Sopoby Heat Shrink Solder Connectors - Waterproof Wire Terminals For Automotive & Marine Electricals by Deandre Kamaludin

I only use these for light electronics so far, such as splicing in a case fan to a power supply molex for a computer case. There isn't a lot of expectation of movement or tension on the joint, all I am really doing it for is to keep the connection and prevent any shorts from occurring accidentally.That said, even with my relatively inept skill at this, it does seem to do that job sufficiently. I was a little worried about the reports of people blasting through the plastic and splattering solder all over the place, which would be disastrous inside a computer case which is where this was performed, so I was very cautious and am not even entirely sure I did much more than a shrink wrap on the wires, though I think the solder did get melted onto the wires. It was hard to tell though. I gave it the light tension test of tugging on the wire to see if it seemed to come loose, and it did not, which was good enough for me. If this was expected to come under any real strain on any basis at all, then I would want more proof that it had worked, probably would have cut off the shrink wrap and looked to see that I was sure the solder had melted and it had worked, then cut it and do it all over again. But for my purposes, admittedly extremely light, it worked. I used a heat gun that I set to 400 F for this. I used a set of "helping hands" clips to keep the wires held up for the heat gun and moved the heat gun all around one side, then twisted the wire around in the clips and did the second side. It took a while to shrink wrap the wires, and again I am uncertain if it actually melted the solder, but again, my needs were limited. My lack of confidence in the soldering happening, the reports about solder splattering after melting through shrink wrap fear, and the length of time it took to shrink wrap the wires are why I ticked down overall rating, ease of use, and adhesion.