Does anyone know of crimpers like these?

[Kevin Sevcik]

Originally Posted by Alex698

If they are pricey, they MUST be fancy, actually they look to be used for some heavy duty wire/crimps. if all else fails you can always put it in your shop-vise and crank down!

-Alex

That's a much less than optimal solution. The whole point is to crimp the connector tightly in one spot so the wire is effectively too wide to fit through on either side of the crimp. That way, to pull the wire out you have to provide enough force to overcome friction and compress the wire enough to get through the smaller area. Squishing with a vise pretty much means the connector and wire are about the same cross section still, so all you have to do is overcome friction to pull the wire out. So basically, there's a reason everyone buys these expensive crimpers and doesn't just use a vise.