Hole saw bi-metal M.K. Morse 51 mm (2") for metal and wood, MORSE-PTA-MHS32

Bi-metal hole saw M.K. Morse 51 mm (2") is designed for cutting clean, circular openings in metal and wood. Made from a bi-metal alloy, this hole saw combines high-speed steel cutting edges with a flexible backing to resist breakage and withstand increased temperatures during drilling. Compatible with portable drills and drill presses, it delivers consistent edge quality for installations that require precise holes.

Advantages

The bi-metal construction provides a balance of durability and flexibility, extending tool life compared with standard carbon-steel hole saws. Heat resistance reduces wear during prolonged cutting in metal, while the tooth geometry helps produce smoother edges and faster cutting performance. Its 51 mm (2") diameter meets common installation sizes, offering reliable results for both one-off tasks and repetitive professional use.

Suitable for

• Cutting holes for pipes and conduits in construction and renovation
• Making openings for electrical boxes and switches
• Installing HVAC components and ductwork penetrations
• General carpentry and metalworking where clean round holes are required

Key specifications

• Diameter: 51 mm (2")
• Material: bi-metal alloy (high-speed steel teeth with flexible backing)
• Compatible with: portable drills and drill presses
• Application: suitable for cutting in metal and wood
• Design: tooth geometry optimized for smoother edges and reduced cutting time

How to use

Secure the appropriate arbor and pilot bit before fitting the hole saw to the drill or press. Mark the center point of the required opening and align the pilot bit to maintain position during cutting. Start drilling at low speed to establish the hole, then increase speed and apply steady, moderate pressure. For metal work, use cutting lubricant and moderate feed to reduce heat build-up. Clear chips periodically to maintain cutting efficiency and avoid binding.

Usage recommendations

Use appropriate personal protective equipment such as safety glasses and gloves. Match the drill speed and feed rate to the material being cut: lower speeds for thicker metal, moderate speeds for wood. Inspect the hole saw before use and replace if teeth are damaged. When cutting metal, apply cutting fluid and allow periodic cooling to prolong life and maintain edge quality.