Join Date: Aug 2006
Location: Arlington, VA
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Drives you nuts, doesn't it? :-)
I do this stuff professionally, and have found it's a very good idea to have BOTH types of crimpers. You just have to bite the bullet and shell out a few bucks up front....it only hurts once :-)
Yes, the single-crimp ANCOR tool is for heat-shrink insulated terminals, and works very well. Used properly, it doesn't destroy the heat shrink covering.
However, I very much like the double-crimp terminals because they add a measure of strength, in that part of the crimp grabs the wire's insulation, while part grabs the wire conductor itself. Makes for a very strong connection. I routinely cover these with adhesive heat shrink tubing. Makes for an attractive, functional, watertight, and very strong connection.
One reason to have both types is that sooner or later you're gonna be in the middle of a job and find that no matter how many terminals you've brought along you have run out of the proper size ring terminals of one type or another. Or, the local West Marine may have run out of one type or another. Having the flexibility of using either single-crimp or double-crimp terminals is very useful.