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Hole saw DRAUMET Kroņurbis BI-metal 51 mm — model 9032725, bi-metal construction for metal and wood
Bi-metal hole saw made from HSS tool steel and M2 high-carbon steel, designed for cutting holes with a 51 mm diameter and a drilling depth of 34 mm. The tool features an M14 thread and a HEX mounting method, suitable for use with compatible drills and drivers.
The DRAUMET bi-metal hole saw combines wear resistance of HSS tool steel with toughness of M2 high-carbon steel, providing a long service life and clean cutting performance across a range of materials. Its M14 thread and HEX mounting ensure secure attachment and easy installation. The 51 mm diameter and 34 mm cutting depth make it suitable for medium-depth, precision hole cutting.
Install the hole saw onto a compatible arbor or directly to a drill with M14/HEX mounting, ensuring the connection is secure. Mark the centre of the hole on the workpiece, use a pilot drill if available to improve accuracy, then start drilling at low speed to establish the cut. Apply steady pressure and maintain cooling or lubrication when cutting metals to extend tool life. Withdraw periodically to remove chips and prevent overheating.
Use appropriate personal protective equipment, select drill speed and lubrication according to the workpiece material, and avoid excessive side loads to preserve the cutting edge and the arbor mounting.
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