Love Turning but Hate Sharpening? If you love pen turning, but don’t have the time or expensive equipment necessary to constantly sharpen traditional tools, you need Woodpeckers new Ultra-Shear carbide insert tools. These tools eliminate the drudgery of sharpening by using nano-grain carbide inserts mounted to induction-hardened alloy steel shafts. When the edge finally gets dull (more on that later), simply rotate the cutter to a new edge. When all edges are dull, put on a new insert and get right back to your project.