Hole Saw Irwin BiM 67 mm, model 10504192 — 67mm Bi-metal hole cutter

The Irwin BiM 67 mm hole saw is a bi-metal hole cutter designed to create clean 67 mm diameter openings in wood, plastic and thin metal sheet. Built from bimetal construction for improved toughness and heat resistance, this hole saw is intended for tasks that require accurate circular cuts, such as plumbing, electrical installations and HVAC penetrations. The set-like design accepts standard arbors and is compatible with drill presses and handheld drills capable of providing steady speed and torque for through-cuts.

Advantages

Bi-metal construction combines high-speed steel cutting edges with a flexible alloy body, offering extended life compared with carbon-steel saws and improved resistance to heat buildup during cutting. The 67 mm diameter provides a common size for conduit, pipe and ventilation openings while maintaining a thin kerf for reduced material waste. Tooth geometry is optimized for cutting diverse materials—wood, plastic and thin metal sheets—without frequent tooth breakage or rapid dulling.

Suitable for

• Creating 67 mm diameter holes for plumbing and pipework
• Cutting access holes for electrical conduit and junction boxes
• Making ventilation and HVAC penetrations in ducting or panels
• General-purpose holes in wood, plastics and thin sheet metal

Key specifications

• Diameter: 67 mm
• Material: bi-metal construction (HSS cutting edge bonded to alloy body)
• Intended materials: wood, plastic, thin metal sheet
• Cut type: through-hole circular cutting
• Compatibility: standard drill arbors and handheld drills or drill press
• Design feature: thin kerf for reduced waste and faster cutting

How to use

Select a drill and arbor compatible with a 67 mm hole saw and mount the saw securely on the arbor. Mark the center point of the required opening and, if available, use a pilot bit or pilot arbor to stabilize the saw during plunge cutting. Start drilling at low speed to seat the pilot, then increase to a steady speed appropriate for the material while applying firm, even pressure. For metal sheet, use cutting lubricant and avoid excessive feed rate to reduce heat and prolong tool life. After cutting, remove the cut slug and deburr the hole as needed.

Usage recommendations

Use appropriate personal protective equipment, clamp workpieces securely, and match drill speed and feed to the material. Replace worn arbors or pilot bits to maintain accurate, safe cutting performance; for metal work, use cutting fluid and allow frequent pauses to cool the saw.