Hole saw M.K. Morse Advanced Bi-Metal 27 mm (1-1/16") - MORSE-PTA-MHS17

The M.K. Morse Advanced Bi-Metal 27 mm (1-1/16") hole saw is a bi-metal cutting tool designed to produce clean, circular holes in a variety of materials. Constructed with a bi-metal blade, it balances hardness for cutting performance and flexibility for resistance to breakage and heat. The 27 mm diameter suits small through-holes for pipework, conduits, cable glands and fixtures, and it is intended for use with compatible arbors in standard drills and drill presses.

Advantages

The bi-metal construction combines high-speed steel cutting edges with a flexible backing, providing improved durability and wear resistance compared with standard carbon tool steels. The Advanced series design helps dissipate heat and resist tooth wear during prolonged cutting, reducing the need for frequent blade changes. Its 27 mm size allows precise, repeatable holes with minimal burr formation when used at appropriate speed and feed rates.

Suitable for

• Cutting circular holes in thin and medium-thickness metal sheets
• Drilling openings in wood for fittings and pipe penetrations
• Making holes in some plastics and composite panels
• Workshop, maintenance and construction applications requiring small-diameter holes

Key specifications

• Cutting diameter: 27 mm (1-1/16")
• Blade type: Bi-metal construction (HSS teeth with flexible steel backing)
• Intended mounting: Use with compatible hole saw arbors and standard drill chucks
• Typical use: Suitable for metal, wood and selected plastics
• Form factor: Circular cup-style hole saw

How to use

Select a compatible arbor and secure the hole saw to the arbor following the arbor manufacturer’s instructions. Mark the center of the hole and, if available, use a pilot drill to guide the hole saw. Operate the drill at recommended speeds for the material being cut; lower speeds are recommended for metals to reduce heat build-up. Apply steady, moderate feed pressure and periodically withdraw the saw to clear chips and allow cooling. Use cutting fluid when cutting metals to extend tool life and improve cutting performance.

Usage recommendations

Use appropriate personal protective equipment such as safety glasses and gloves. Ensure the workpiece is securely clamped and the pilot drill is centered before starting. For thicker or harder metals, consider incremental cutting or a stepped approach to avoid excessive heat and premature wear. Replace the hole saw if teeth show significant wear or damage that affects cut quality.