Hole saw M.K. Morse Advanced Bi-Metal 46 mm (1-13/16") — bi-metal hole cutter for metal and wood

Hole saw M.K. Morse Advanced Bi-Metal 46 mm (1-13/16") is a bi-metal hole cutter designed for cutting medium-size circular openings in metal and wood. It combines high-speed steel cutting edges with a flexible backing to deliver extended life and resistance to heat and breakage. The cutter is intended for use with hand drills and drill presses and is suitable for common construction, HVAC, plumbing and electrical installation tasks that require precise round holes.

Advantages

The Advanced Bi-Metal construction pairs hardened HSS teeth with a spring steel body to provide a balance of cutting performance and toughness. The 46 mm diameter gives a consistent, clean hole for pipe entries, conduit runs and fixture mounting. The teeth geometry and bi-metal design reduce chatter and improve wear resistance when cutting through sheet metal, timber and composite materials. The saw retains sharpness longer than simple carbon-steel alternatives and tolerates higher operating temperatures, allowing faster feed rates in many applications.

Suitable for

• Cutting circular openings in thin to medium sheet metal
• Making holes in wood, plywood and composite panels
• Creating cable and conduit entry points for electrical installations
• Drilling holes for HVAC and plumbing pipe penetrations
• Workshop and general maintenance drilling with hand drills or drill presses

Key specifications

• Diameter: 46 mm (1-13/16")
• Material: bi-metal (high-speed steel cutting edges bonded to flexible backing)
• Intended materials: metal and wood
• Compatibility: designed for use with standard drill chucks and drill presses
• Cut type: circular hole saw for through-holes and panel openings

How to use

Fit the hole saw to an appropriate arbor or mandrel and secure it in the drill chuck according to the drill manufacturer's instructions. Mark the center of the hole on the workpiece and, if possible, use a pilot bit or guide to stabilize the cut. Start drilling at low speed to establish the cut, then increase speed and apply steady, even pressure. For metal work, use cutting lubricant to reduce heat and prolong tool life; for wood, ensure the workpiece is firmly clamped to avoid splintering. Clear chips regularly and allow the saw to cool if it becomes hot during extended cuts.

Usage recommendations

Use appropriate personal protective equipment, including eye and hand protection. Select drill speed and feed rate according to workpiece material: lower speeds for harder metals and higher speeds for wood. Periodically inspect the teeth for wear and replace the hole saw if cutting performance degrades or teeth are damaged. Keep the saw clean and store in a dry place to prevent corrosion.