How Self-Tungsten Carbide Drill

If less than 2mm can be found tungsten carbide blade, such as a thin cutting blade used lathe, if more appropriate, generally available cemented carbide inserts with a cutting blade suitable for cutting machine to use, and then welded to the accompanying drawings in design corresponding round rod, drill bit better than the small drilled holes, with a diameter at least as large. Usually, after coarse grinding can be used by hand. If required hole diameter precision grinding machines available (tool grinder), and then use hand geometry and grind each cutting flutes. The diamond drill bit slightly smaller than the apex angle is appropriate, to repair a small chisel grind so easy when drilling hollow, to prevent swinging. Such tungsten carbide drill applies only to the depth of drilling hardened parts is not deep holes.