It is only for copper wire otherwise the cutters will be damaged.
The problem lies in the style of cutter. The very steep and sharp grind of the cutting blades is in its very nature intended only for softer cables - copper, some aluminum, etc. Even hardened material wouldn't make a difference - the thin cutting edges would easily be damaged. Since I handle 12/3 SOOW cable on a daily basis , I've always had an eye on these. For the hardest wires, aircraft cable, etc, you need a cutter designed to SHEAR the material being cut, not slice it. Think of what a hard wire notch does, its not cutting through material by driving an object through it, but rather pushing with great force in two opposite directions at a very concentrated spot. These opposing forces shear the material apart. Some day I need to do a whole thing on cutting heads, styles and intended uses. The Powercut used a diagonal cutter head. Even the best Knipex Diagonal cutters have their limits and intended uses. In the end, no matter what material they used, the Powercut would have had a failure point. As we know cast stainless steel has a much lower failure point that forged tool steel. That said, I still think they gave up too soon.
I was putting connectors on 12/3 S cable all day yesterday, reminded me I still want one of these.
Quote from: gafftapegreenia on March 12, 2010, 08:50:10 PMI was putting connectors on 12/3 S cable all day yesterday, reminded me I still want one of these. Well then...