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The Desic 15mm diamond coated hole saw drills hard, brittle materials that twist bits and carbide saws struggle with: glass, porcelain, ceramic and stone tile, marble, granite, slate and fiberglass. High-density electroplated diamond grit on the rim cuts through the surface, and the 33mm maximum depth clears most wall and floor tile plus the adhesive behind it. It is a single small-diameter bit, so it suits waste pipe and fixture holes in bathroom and kitchen tiling rather than large cutouts. Compared with carbide tile bits, diamond grit lasts longer in porcelain and glass but cuts slower and needs water cooling to survive.
In stockShips from New Zealand · priced in NZD (NZ$15.90) · duties may apply
This is a diamond coated hole saw for drilling hard materials. It cuts glass, wall and floor tiles, marble, ceramic, granite, porcelain, limestone, slate, stone and fiberglass. It suits jobs such as running waste pipes through tile-lined walls and floors in a bathroom.
The cutting edge uses high density electroplated diamonds. It has a 15mm diameter and a 6mm shank.
Wet cutting is best. It keeps the hole saw cool, helps it last longer, removes dust and flushes out slurry for faster cutting. Use a spray bottle of water, or build a well of plasticine or Blu-tac around the area. If you must cut dry, drill for 5 seconds and rest for 10 seconds to avoid overheating. Do not use hammer action, which is less effective and can damage the hole saw. Oil the hole saw after use to prevent rust.
