I saw a lot of this splicing type in old military radio transceivers (&quot;portable&quot; for a given value of portable - usually some kind of backpack weighting ~30Kg - and the batteries were in another backpack).<p>That splicing works for solid-core conductors, but it doesn&#x27;t have the same strength on stranded wire, as it is more flexible. It could work on tinned thin stranded wire (as it makes a kindof-solid wire) but if you tin it then you can just solder it and that&#x27;s it. The referenced standard[1] also contains the splicing for stranded wire, and some requirements about when and how to use each.<p>[1] <a href="http:&#x2F;&#x2F;www.hq.nasa.gov&#x2F;office&#x2F;codeq&#x2F;doctree&#x2F;87394.pdf" rel="nofollow">http:&#x2F;&#x2F;www.hq.nasa.gov&#x2F;office&#x2F;codeq&#x2F;doctree&#x2F;87394.pdf</a>