Bi-metal hole saw M.K. Morse Advanced Bi-Metal 98 mm (3-7/8")

The M.K. Morse Advanced Bi-Metal hole saw 98 mm (3-7/8") is a circular cutting tool designed for drilling clean round holes in metal and mixed materials. Constructed with a bimetal cutting edge, this hole saw is intended for use with compatible arbors on portable drills and drill presses. The tool is suitable for cutting through sheet metal, pipes and structural components where durability and edge retention are required.

Advantages

The bi-metal construction combines a high-speed steel tooth edge with a flexible alloy backing to provide wear resistance and resistance to breakage under moderate torque. The 98 mm diameter produces consistent, accurately sized holes while the tooth geometry is optimized for efficient chip evacuation and reduced heat build-up. The design allows use with standard hole saw arbors and common drilling equipment, making it a practical choice for both site and workshop operations.

Suitable for

• Cutting round holes in sheet metal and steel panels
• Opening holes in pipes and tubing
• Creating access or clearance holes in structural metal components
• Use with portable drills or drill presses with compatible arbor

Key specifications

• Diameter: 98 mm (3-7/8")
• Material: bi-metal (high-speed steel teeth on alloy backing)
• Suitable for: metal and mixed materials including steel and sheet metal
• Compatible mounting: standard hole saw arbors for drills and drill presses
• Typical applications: through-holes in pipes, panels and structural parts

How to use

Select a compatible arbor and pilot bit for your drill or drill press, securely mount the hole saw onto the arbor and tighten according to the arbor manufacturer's instructions. Mark the center of the hole on the workpiece, position the pilot bit, and start drilling at low speed to establish the cut. Apply steady, moderate pressure and allow the saw to cut without forcing; increase speed as appropriate for the material and machine. Periodically withdraw the saw to clear chips and prevent overheating. Finish the hole and deburr edges as required.

Usage recommendations

Use cutting lubricants or coolants when cutting thicker steel to reduce heat and extend blade life. Wear appropriate personal protective equipment including eye and hand protection. Ensure the workpiece is securely clamped and the drill or press is operated within recommended speed and torque limits for a 98 mm bi-metal hole saw.