Bi-metal hole saw M.K. Morse Advanced Bi-Metal 92 mm (3-5/8")

The M.K. Morse Advanced bi-metal hole saw with a 92 mm (3-5/8") cutting diameter is a circular saw blade designed for creating clean, reliable holes in a range of construction and installation tasks. Its bi-metal construction combines high-speed steel cutting edges with a flexible alloy body to balance wear resistance and toughness. The saw is compatible with standard hole saw arbors and is intended for use on metal, wood and composite materials where a durable cutting edge and chip clearance are required.

Advantages

The bi-metal design provides extended edge life compared with basic carbon-steel hole saws while maintaining resistance to heat and shock during intermittent drilling. Precision-tooth geometry helps reduce burrs and improves cut quality across different material types. The 92 mm diameter offers a common size for plumbing, electrical and ventilation applications, and the saw’s construction supports efficient chip evacuation to reduce binding and facilitate consistent cutting.

Suitable for

• Cutting circular openings for pipes and conduits in metal panels
• Creating holes for electrical boxes, cable entry and conduit passthroughs
• Making vent and duct openings in sheet metal and composite panels
• Drilling larger diameter holes in timber, plywood and laminated boards

Key specifications

• Cutting diameter: 92 mm (3-5/8")
• Material: bi-metal construction (high-speed steel teeth bonded to an alloy body)
• Compatibility: fits standard hole saw arbors for drills
• Application: suitable for metal, wood and composite materials
• Tooth geometry: precision-cut teeth designed for chip clearance and reduced burr formation

How to use

Fit the hole saw to a compatible arbor and secure it to a power drill appropriate for the material and diameter being cut. Mark the centre point of the required hole and, if available, use a pilot drill or guide bit to stabilize the saw on start-up. Begin drilling at moderate speed with steady forward pressure; allow the saw to cut without forcing and back out periodically to clear chips when cutting thick or dense materials. After completing the cut, remove remaining slug from the saw and inspect the teeth for wear before subsequent use.

Usage recommendations

Use cutting lubricant or coolant when cutting ferrous metals to reduce heat buildup and extend blade life. Wear appropriate personal protective equipment including eye protection and gloves, and ensure the workpiece is securely clamped to prevent movement during drilling.