A great tool for making holes in concrete, ceramics, brick is obtained from a carbide cutting plate lathe cutter, driven on the grinding wheel to the shape of a disk with a tapered cutting edge. Mandrel for mounting in the Chuck is machined from steel rod Ø 12 mm. Disc is mounted on the axial groove with the screw M5. V. KNYAZEV, Leningrad
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The knob for tightening the Chuck of a drill hvastovichi a bit short, so you need enough pressure to firmly hold the drill, especially in the old, soft, cartridge. But you should wear...
