ريشة منشار ثقب ثنائي المعدن قياس (38mm) موديل (GL53309)

It’s built to cut wood, copper, aluminum, metal, and stainless steel. The bi-metal construction helps it maintain sharpness and resist wear across these varied materials.

Bi-metal means the saw uses high-speed steel teeth bonded to a tough steel backing. This combination provides sharp, durable teeth for fast cutting and improved wear resistance, helping the tool stay sharp longer and withstand frequent use.

Key specs: 38mm diameter; high-speed steel teeth rated for durability (HRC 65–68); heat-resistant teeth for longer life; alloy steel body for strength and safety; designed for smooth, precise cuts; compatible with standard drill chucks and arbors.

Attach the hole saw to a compatible arbor and chuck it in your drill. Align the pilot or center to your workpiece if used, start at a low speed, and feed steadily with steady pressure. Use a backing piece to reduce splintering on the exit side and consider slower speeds for metal cutting to minimize heat buildup.

Wear safety glasses and gloves, secure the workpiece, and ensure the drill is set to an appropriate speed for the material. Avoid excessive force to prevent tooth damage or twisting. Use cutting oil or coolant when cutting metals to reduce heat and extend tool life, and always keep hands clear of the cutting area.

For smaller holes, the 32mm size (GL53308) is a common alternative, and for larger holes, the 42mm size (GL53310) is a typical option. These sizes let you choose the right diameter for your project without changing tool systems. Examples: https://fepy.com/product/sata-gl53308-bi-metal-hole-saw-32mm and https://fepy.com/product/sata-gl53310-bi-metal-hole-saw-42mm

Bi-metal hole saws are versatile and designed to cut both wood and metal. They stay sharper longer and handle tougher materials better than wood-only versions, making them suitable for mixed-material projects and metalworking tasks.

Yes, as long as your drill can provide the needed torque and the speed appropriate for the material being cut. Using the correct speed and moderate pressure helps prevent overheating and preserves tooth life.

Use it when you need clean, precise holes around 38mm in wood, plastic, copper, aluminum, metal, or stainless steel. It’s suitable for cabinetry, electrical installations, metal fabrication, and DIY projects that require medium-sized holes with good edge quality.

Keep teeth sharp by using appropriate feed rates and avoiding high-resistance starts. Clean residue after use, avoid running dry on metals, and store the tool in a dry place to prevent corrosion. If cutting metals, consider using cutting oil or coolant to reduce heat buildup.

In addition to the 38mm GL53309, you can explore related sizes such as 32mm and 42mm to suit your project needs. Related options (examples): 32mm: https://fepy.com/product/sata-gl53308-bi-metal-hole-saw-32mm, 42mm: https://fepy.com/product/sata-gl53310-bi-metal-hole-saw-42mm