Bi-metal hole saw M.K. Morse Advanced Bi-Metal 41 mm (1-5/8") model MORSE-PTA-MHS26

The M.K. Morse Advanced Bi-Metal 41 mm (1-5/8") hole saw is a cutting accessory designed for making precise circular openings in a range of materials. Constructed with a bi-metal design, this hole saw balances toughness and heat resistance to maintain cutting performance during repeated use. It is intended for use with compatible arbors on drills and drill presses for tasks in metalworking, woodworking and general repair or installation jobs that require reliable, repeatable hole cutting.

Advantages

The bi-metal construction combines high-speed steel cutting edges with a flexible alloy back, resulting in enhanced durability and resistance to overheating compared with stamped carbon steel saws. The tooth geometry and hardened cutting edge provide efficient chip removal and longer life when cutting through thin metals, wood and plastics. Its 41 mm (1-5/8") diameter offers a common, versatile hole size for fittings, bushings and conduit penetrations.

Suitable for

• Cutting holes in thin sheet metal and non-ferrous metals
• Drilling openings in wood and plywood
• Making holes in plastics, laminates and composite panels
• On-site repair, electrical and plumbing installations requiring round openings

Key specifications

• Diameter: 41 mm (1-5/8")
• Construction: bi-metal blade for improved wear resistance and flexibility
• Suitable mounting: compatible with standard hole saw arbors for drills and drill presses
• Typical material compatibility: thin-walled ferrous and non-ferrous metals, wood, plastics and laminates

How to use

Secure a compatible arbor and pilot bit before fitting the hole saw onto a drill or drill press. Clamp the workpiece firmly and mark the hole centre. Start at low speed to establish the pilot hole, then increase speed as appropriate for the material while applying steady, moderate pressure. Use cutting lubricant when working with metals to reduce heat and extend the life of the blade. After cutting, back the saw out carefully and clear chips from the teeth before the next cut.

Usage recommendations

For best results, match drill speed and feed to the material being cut: lower speeds for metals with cutting fluid, and higher speeds for wood and plastics. Inspect the cutting edge before use and replace the saw if teeth are worn or damaged to maintain clean cuts and safe operation.