1. When drilling steel parts, ensure adequate cooling capacity and use metal cutting fluid.
2, good drill pipe steel and guide rail clearance can improve drilling accuracy and drill bit life
3, please ensure magnetic base and workpiece between the level and clean.
4, drilling thin plate, to the workpiece reinforcement, drilling large workpiece, please ensure the stability of the workpiece.
5. Feed should be reduced by 1 / 3 at the beginning and end of the hole.
6, the drilling of a large number of small powder materials, such as cast iron, cast copper, can not use coolant, but use Compressed air to help chip. Please remove the iron filings on the drill body in time to ensure smooth chip removal.