Bi-Metal Hole Saw

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A bi-metal hole saw is a specialized cutting tool used in woodworking, metalworking, and other industries to create holes in various materials. It consists of a cylindrical saw blade with teeth around its edge, and it is called “bi-metal” because it is constructed using two different types of materials.

Typically, the body of the hole saw is made from a softer and more flexible material, such as spring steel, while the cutting edges are composed of a harder and more durable material, often high-speed steel (HSS) or a similar alloy. This combination of materials enhances the saw’s overall performance by providing the flexibility of the body and the cutting efficiency of the harder edges.

Bi-metal hole saws are known for their versatility and ability to cut through a wide range of materials, including wood, plastic, drywall, and various metals. They are commonly used in construction, plumbing, electrical work, and other trades where creating precise and clean holes is essential. The two-material construction allows the hole saw to withstand the stresses of cutting different materials while maintaining sharpness and durability.

1. Cutting edge: M3 HSS
2. Matrix material: 65Mn
3. Cutting depth: 38mm
4. For cutting metal



  1. Metalworking: Bi-metal hole saws are frequently employed in metalworking applications to create holes in metal sheets, pipes, and other metallic structures. The combination of the durable cutting edges and the flexible body allows them to handle different types of metals.
  2. Woodworking: These hole saws are used in woodworking for tasks such as creating holes for plumbing, electrical, or carpentry work. They can cut through various types of wood, plywood, and other wooden materials.
  3. Plumbing: Bi-metal hole saws are widely used in plumbing installations to create holes for pipes and fittings in materials like drywall, plastic, and even metal. They provide a quick and efficient way to make precise openings.
  4. Electrical Work: Electricians use bi-metal hole saws to create openings for electrical boxes, conduit, and wiring in walls, ceilings, or panels. The ability to cut through a range of materials makes them suitable for various electrical installations.
  5. Construction: In construction, bi-metal hole saws are utilized for tasks such as installing locks, doorknobs, and other hardware. They can be used on materials like fiberglass, cement board, and various construction materials.
  6. HVAC (Heating, Ventilation, and Air Conditioning): HVAC professionals use bi-metal hole saws for cutting holes in ductwork, panels, and other materials encountered in HVAC systems.
  7. Automotive Repair: Bi-metal hole saws are employed in automotive repair and customization for cutting holes in metal panels, plastic components, and other materials during modifications or repairs.
  8. DIY Projects: Bi-metal hole saws are popular among DIY enthusiasts for a wide range of home improvement projects. They can be used for tasks like installing faucets, creating openings for ventilation, or making holes for decorative elements.
  9. Maintenance and Repairs: These hole saws are valuable tools for general maintenance and repair work where the need arises to create openings in diverse materials.
SKU: AHS28657 Category:


9/16″ (14mm), 5/8″ (16mm),3/4″(19mm),7/8″(22mm),1″(25mm),1-1/16″ ( 27mm), 1-1/8″ (29mm),1-3/16″ ( 30mm), 1-1/4″(32mm),1-3/8″(35mm),1-1/2″(38mm),1-9/16″ ( 40mm),1-3/4″ (44mm),2″ (51mm),2-1/8″(54mm),2-1/2″(64mm),3″ (76mm),3-3/8″ (86mm),3-1/2″ (89mm)

Safety measures and precautions

  1. Protective Gear:
    • Wear appropriate personal protective equipment (PPE) such as safety glasses or a face shield to protect your eyes from debris generated during cutting.
    • Use hearing protection if the noise produced by the cutting process is loud.
  2. Clothing:
    • Wear appropriate clothing that covers your body, including long sleeves and pants, to protect against flying debris.
  3. Gloves:
    • Use sturdy gloves to protect your hands from sharp edges and hot surfaces.
  4. Secure Workpiece:
    • Ensure that the workpiece is securely clamped or stabilized before starting the cutting process. This helps prevent the workpiece from moving unexpectedly, reducing the risk of accidents.
  5. Drill Speed:
    • Operate the hole saw at the recommended speed specified by the manufacturer. Using the correct speed helps optimize cutting efficiency and extends the life of the tool.
  6. Cooling Lubricant:
    • If applicable, use a cooling lubricant or cutting fluid to reduce friction and heat during the cutting process. This helps improve the performance of the hole saw and prolong its lifespan.
  7. Check Tool Condition:
    • Regularly inspect the condition of the bi-metal hole saw. Replace the hole saw if it is damaged, worn, or has dull teeth, as a dull tool can increase the risk of accidents and reduce cutting efficiency.
  8. Proper Size:
    • Ensure that you are using the correct size of the hole saw for the intended task. Using the wrong size can result in inefficient cutting and may lead to safety hazards.
  9. Stable Platform:
    • Work on a stable and level platform. Unstable or uneven surfaces can lead to loss of control over the tool.
  10. Follow Manufacturer’s Instructions:
    • Adhere to the manufacturer’s instructions and guidelines for the specific bi-metal hole saw you are using. This includes information on proper usage, maintenance, and safety precautions.
  11. Electricity and Wiring:
    • If working near electrical components, make sure to de-energize the area or take necessary precautions to avoid electrical hazards.
  12. Emergency Preparedness:
    • Be familiar with the location of emergency exits, first aid kits, and other emergency equipment in case of accidents.




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