What drills do we use to drill jade?
Process for drilling holes on the jade carving is the use of drilling needle method, with a needle, rotated on the jade carving, jade sand "," to grind a shallow pit on the surface, then the pit, until the jade material wear. The drilling period "jade sand" has been in the pit with rotating rubbing hole wall, so the upper hole than the lower part to bear "jade sand" friction, so that by this method to hit the hole, the hole is small in shape.
A grinding head tool that is bonded with diamond (diamond) or diamond powder.
Use of modern ultrasonic drilling machine, the principle of high frequency vibration generated by the ultrasonic wave, the small needle drill under high speed moving, driven by abrasive drilling. Due to the small drill needle does not rotate, just move up and down reciprocating frequency. Therefore, the quality of drilling is very high and the holes are evenly distributed up and down.
