Hole saw Dedra 08W178 — diameter 17.8 cm, for metal, stainless steel, aluminium, plastic, wood

Dedra 08W178 is a single-piece hole saw with a 17.8 cm cutting diameter designed to create large, precise openings in a variety of materials. Intended for workshop and construction tasks, this hole saw cuts through metal, stainless steel, aluminium, plastic and wood and is compatible with standard drill arbors for straightforward mounting and use.

Advantages

The one-piece construction provides stability and reduces vibration during cutting, which helps achieve cleaner edges and longer tool life. Its 17.8 cm diameter allows efficient formation of wide holes for installations such as ducts, pipes and cable passages. The geometry and material of the cutting edge are optimized for mixed-material use, enabling transitions between wood, plastics and non-ferrous metals without the need to change tools.

Suitable for

• Cutting openings for ventilation ducts and exhausts
• Creating passages for plumbing and piping installations
• Making large cable entry holes in walls and panels
• Fabrication and fitting tasks in metalworking and carpentry workshops

Key specifications

• Cutting diameter: 17.8 cm
• Construction: single-piece hole saw
• Compatible mounting: standard drill arbor
• Suitable materials: metal, stainless steel, aluminium, plastic, wood
• Typical applications: large-diameter hole cutting for installations

How to use

Securely mount the hole saw on an appropriate arbor and ensure the arbor is correctly fitted to the drill. Mark the center point of the required opening and, where possible, clamp the workpiece to prevent movement. Begin drilling at low speed to establish the pilot point, then increase speed as stability permits. Apply steady, moderate pressure and allow the tool to cut without forcing; withdraw periodically to clear chips and reduce heat buildup. After cutting, deburr the edge as needed for a clean finish.

Usage recommendations

Use appropriate personal protective equipment, including safety goggles and gloves. Select drill speed and feed rate according to the material: lower speeds for stainless steel and harder metals, higher speeds for wood and plastics. For prolonged metal cutting, consider intermittent cutting and cooling intervals to avoid overheating and preserve the cutting edge.