I took a block of wood, about four or five inches long, two inches thick and drilled holes for the different sizes of wire I'm going to strip. Then, I just screwed a deck screw so that it comes out the center of the hole. I tighten until it just barely pierces the insulation and strip. Cost me almost nothing because I had the materials left over from other projects. I saw this stripper on ebay and thought, "Oh, there's gotta be a cheeper way."
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