LiDiao Pagoda Drill Bit Step Drill High Hardness Metal Stainless Steel Hole Opener Special Drill Iron Opening Hole Enlarging Hole 4-32mm

1. For stainless steel drilling, choose the wear-resistant drill bits or those specifically designed for stainless steel. Refer to the speed chart for speed control.

2. Start drilling at a slow speed with larger diameters requiring slower speeds (≤800r/min).

3. Use cooling assistance for continuous drilling. Check the method after every 20 seconds of drilling.

1. For diameters of 20 and above, except for electric screwdrivers, choose the round shank (electric screwdrivers can be used because they have torque control that will not exceed the load).

3. In case of jamming, reverse the drill to remove it gently. For larger power drills, reduce the speed.

4. Apply light pressure when drilling with a cordless drill to avoid breakage. Stay away from slipping drills.

1. If the drill slips and does not cut, check the speed.

2. If the drill stops cutting halfway through, reduce the speed. If the issue persists, consider using a more powerful drill.