Measure the outside diameter of the pipe or fitting and add the clearance required by the installation. Do not choose from the nominal pipe description alone.
Large-Diameter Cutters for Timber, Metal and Boards
Hole saws cut larger circular openings for pipes, cables and fittings while removing less material than a solid bit. Choose the diameter from the finished fitting clearance, not the nominal pipe size alone.
Match the cutter to timber, metal or board and confirm the arbor, pilot drill and chuck fit. Browse related drill bits for smaller holes and preparation work.
Clamp the work, start square and clear the plug and swarf regularly. Use a suitable speed for the diameter and material, because large cutters need slower rotation and controlled pressure.
Hole Saw FAQs
Only if it is rated for both materials. Bi-metal cutters often cover timber and thin metal, while other materials may require carbide or diamond products.
The arbor connects the cutter to the drill and usually carries the pilot bit. Match its thread or mounting system, shank and cutter size range.
Excessive speed, a blunt cutter, poor chip clearance or too much pressure can create heat. Stop, clear waste and use the recommended speed and cutting method.
Only use a cutter specifically designed and rated for that masonry. Standard timber or bi-metal hole saws are not substitutes for compatible core drilling equipment.