Hole saw bi-metal Dedra 68 mm (2-11/16")

Bi-metal hole saw Dedra 68 mm (2-11/16") is designed for cutting precise circular openings in a variety of construction materials, including metal and wood. Manufactured from bi-metal alloy, this hole saw combines hardened cutting edges with a flexible body to provide improved resistance to heat and wear during drilling operations. The 68 mm diameter makes it suitable for creating openings for plumbing fixtures, conduit and cable pass-throughs, and other installations that require an accurate round hole.

Advantages

The Dedra bi-metal construction gives enhanced durability and longer life compared with standard high-speed steel saws, while the tooth design maintains cutting efficiency across wood, soft metals and composite materials. Its heat resistance helps reduce premature dulling during prolonged or heavy-duty use. The saw is compatible with common drill drivers and hole saw arbors, allowing fast fitting and straightforward replacement when needed.

Suitable for

• Creating openings for plumbing pipes and fittings
• Installing electrical conduits, junction boxes and cable entries
• Cutting circular holes in wood panels and laminates
• Making pass-throughs in thin sheet metal and non-ferrous metals

Key specifications

• Diameter: 68 mm (2-11/16")
• Material: bi-metal construction (high-speed cutting teeth bonded to flexible body)
• Compatibility: for use with standard drill drivers and hole saw arbors
• Recommended cutting thickness: suitable for wood, soft metals and common construction materials (use appropriate pilot bit and arbor)

How to use

Secure the hole saw to a compatible arbor and ensure a correct pilot bit is fitted to maintain centring during drilling. Clamp the workpiece or otherwise secure it to prevent movement. Start drilling at low speed to create a pilot engagement, then increase speed and apply steady, moderate pressure while allowing the teeth to cut without excessive force. Periodically withdraw the saw to clear chips and reduce heat build-up. For metal cutting, use cutting fluid or lubricant and lower speeds to extend tool life.

Usage recommendations

Wear appropriate personal protective equipment, including eye protection and gloves. Select an arbor and pilot bit that match the hole saw size and ensure your drill has sufficient power and torque for the intended material. For prolonged metal cutting, use cutting lubricant and pause occasionally to avoid overheating; for clean finishes in wood, use a backing board to reduce tear-out.