Sheartak Spiral Cutterhead for L.S. Barker 9" Jointer Woodworkers are now retrofitting spiral cutterheads to their old planers, and jointers for the following advantages. * Smoother Finish with no tear-out. Each knife sits at a slight angle and produces a shear-cut. Spiral cutterhead planes board staggered, which is much better than a single straight cut. The combined shear and staggered cut eliminates tear-out and leaves a glossy surface finish on even highly figured hardwood. * Noise is hugely reduced as the spiral cutterhead allows a few knives to cut in a staggered way. * More than 10 times the life use of high-speed steel. The 15x15x2.5mm inserts are made of sintered tungsten carbide which is much more complicated than high-speed steel. Each insert has four edges. * Easy to change. The knives are precision ground to a tolerance of +/-0.0004" or +/-0.01mm and are interchangeable. Loosen the screw, rotate 90° for a new edge, and tighten the insert in minutes. * Dust extraction is easier. The spiral cutterhead produces thinner and shorter chips. * Low cost to use. Spiral cutterheads produce a smoother finish, reduce or eliminate sanding work, and don't require sharpening, your product will pay for itself in a concise time. Spiral Cutterhead Kit includes: * High tensile strength alloy steel cutter block. * 54 carbide inserts are installed. * 5 extra carbide inserts & 5 extra screws free as spare parts. * 1 Wrench
