Hole saw bi-metal M.K. Morse Advanced Bi-Metal 33 mm (1-5/16") MORSE-PTA-MHS21

The M.K. Morse Advanced Bi-Metal hole saw 33 mm (1-5/16") is designed to cut precise circular openings in metal and mixed materials. Manufactured from bi-metal construction, this hole saw balances cutting performance with durability and wear resistance. It is compatible with standard drills and drill presses and is intended for users who need reliable round holes for conduit, pipes or fittings.

Advantages

This bi-metal hole saw provides long life and consistent cutting performance thanks to its bimetal construction that combines a high-speed cutting edge with a flexible backing. The 33 mm diameter allows accurate, repeatable holes for typical electrical and plumbing applications. The saw is suitable for use in both portable drills and stationary drill presses, offering versatility on job sites and in workshops. Its design reduces tooth failure and supports efficient chip evacuation for cleaner cuts.

Suitable for

• Cutting holes for electrical conduit and cable glands
• Creating openings for pipes and fittings in HVAC installations
• Making round access holes in thin to medium-thickness metal sheets
• General metalworking and maintenance tasks requiring precise round holes

Key specifications

• Material: bimetal construction for wear resistance and toughness
• Cutting diameter: 33 mm (1-5/16")
• Suitable for: metal and mixed materials (thin to medium thickness)
• Compatibility: designed for use with hand-held drills and drill presses
• Cutting edge: high-speed steel teeth for improved life and performance

How to use

Select the appropriate pilot bit or mandrel compatible with the hole saw and secure it per the drill or press manufacturer's instructions. Mark the center of the intended hole, clamp the workpiece to prevent movement, and position the pilot bit on the mark. Start drilling at low speed to establish the cut, then increase speed as appropriate for the material while applying steady, moderate pressure. Periodically withdraw the saw to clear chips and prevent overheating. Use cutting fluid when machining ferrous metals to extend tool life and improve cut quality.

Usage recommendations

For best results, ensure the workpiece is securely clamped and use a suitable mandrel or arbor with pilot bit. Use cutting lubricant when cutting steel or stainless materials, and avoid excessive feed pressure or high speed that can cause premature wear. Inspect the teeth before use and replace the saw if signs of severe wear or damage appear.