However, that was before the RVFM HT-225D, which I got from Rapid.
It has the correct 'B' shaped jaws to make proper crimp joints:
To use this effectively, you need a set of crimp pins, and you need to carefully strip and trim the wire, like this :
Then you need to insert a crimp pin into the appropriate jaws - note you don't always need to remove them from the strip, I found them easier to handle by bending a single pin away from the strip.
Then, insert the wire : I marked a small dot with a sharpie to mark the appropriate depth:
Pull the handles together until they're all crimped - rinse and repeat:
So much easier and more efficient than the manual pliers/solder method. They're not 'perfect' yet - according to the spec I've got a little too much insulation in there - but it's a damn sight neater than my first attempts a couple of years ago :-).
Completed Plug :