Product Review

Caution:
1. Water cooling
2. High speed (20000 rpm or more)
3. Smooth, do not shake, with grinding, grinding, speed small bench drill (preferably bench drill)
4. Light pressure.
Applicable machines: bench drill / trolley
Use: jade, metal, agate, jade, precious stones, pearls, pendants, pebbles can be used (different hardness of the material hardness is also different)
Use Notes:
1. You can first truncate the full length, which can reduce the shaking
2. You can use the vise to reduce the head a little bit, so you can prevent slipping
3. Need to keep the water cooling and cooling the appropriate pressure, excessive force will lead to needle fracture.
4. Before use, need to take protective glasses to do security measures to avoid unnecessary damage.
Use caution:
1. Drilling, the drill must be part of the drip cooling and the application of appropriate pressure, should not force too much, otherwise the drill easily broken or deformation.
2. Just learning drilling, the drilling needle is often broken or deformation, it is normal, mostly unskilled operation, more operations can improve this situation.
3. In addition, the use of high-speed drilling needle drilling, the higher the speed, the better the effect.
4. For better use of drilling needle, can be used with the hollow casing, the better.
Package Include:
10pcs diamond Twist Drill Bit*1