• Clamp the pilot drill in the hole saw arbor and make sure that it projects at least 3 mm (1/8) over the teeth of the hole saw.
• When cutting metals, use a high-quality cutting oil, if possible. This facilitates smooth running and lengthens the hole saw life.
• Exceptions: When working on aluminium, use kerosene instead of cutting oil.
• HSS hole saws are suitable for work on stainless steel (INOX).
• Remove any particles which develop during use from the workpiece in order to avoid corrosion.
• Clean the workpiece chemically or mechanically (etching/polishing, etc.).
• Make sure that all the teeth are applied evenly. Avoid swinging movements during sawing to prevent tooth breakage.
• Avoid overheating.

Safety notes:

• When using shank extensions, the recommended hole saw rotational speed must not be exceeded.