The secret method of drill 1. switch on the machine for grinding table without standing in front of stone wheel directly. Need to stand beside the stone wheel, because centrifugal force in opening the first strong. Rotating grinding stones and keep still before grinding to Regrinding the cutting.2. use your left hand touching the tip of drill bits. The right hand cradled in the foothills of the drill by the left hand is placed on the pallet when sawing stone work with cutting drills, so moving your wheels and grinding stones approached slowly.3. when viewed from above, the skin is angle drill with a grinding stone in front of 59 degrees (both sides sharpening, and equal first).4. the movements of drill grinding stone wheel into contact with. Notice the sharp cut of the drill was a secret until a good, sharp cutting edge barrier ends up with twist drill clockwise to grinding perspective free 8-12 degrees.5. grinding angle drill with stone wheels page 59-degree angle (Angle Cutting) pecking at an angle and includes drills, which will end with size vary according to the type of material to be pierced like General will have 118 degree included angle (half is equal to 59 degrees).6. gently twist drill, spin with more pressure. To make the free rear cutting edge angle, do this on both sides of the cutting edge of drill.7. the angle of the drill, which included secret. accurate angle cutting edge length on both sides must be equal.8. While confidentiality must bring dip drills coolant frequently for cooling a secret drill alternating sides until one by one the same size as needed.
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