MarcusOReallyus
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That's the worst advice on electrical repairs I've ever heard. That is exactly the reason that crimped connections have a bad reputation with some people.I always crimp connectors with channellocks but whatever you have that crushes really well.
Channel locks won't press down hard enough to get a good crimp, and if you ARE getting a good crimp with channel locks, then you're using a low quality connector or you're a body builder, heh.
Ratcheting crimpers aren't that expensive, only about $30... and if you want to use a tool that you already have, use vice grips, they will crimp in a pinch, although I don't suggest it as you can chew through the insulation.
That, and you still won't get a proper crimp. It's not just about how hard you squeeze it, it's also about the shape of the die.
No pliers of any kind can do a proper crimp. Period.
One mistake I see on both of those videos - neither one paid any attention to the orientation of the crimp. There is a seam in most connectors, and that seam will often bust open (weakening your crimp) if it is not respected. The axis of the crimp must be at a right angle to the seam or you risk splitting it. Higher quality connectors are often soldered after being rolled (and before being inserted into the insulation), and these are more forgiving. A few connectors are actually made of a seamless tube, and these don't care about orientation, but they are few and far between.