Hole Saw Bits & Accessories

Hole saws, arbors, extensions and pilot bits from Diablo: bi-metal, carbide, rough-in hole saws, metal hole cutters and tile, stone and glass cutters.

Match the saw to the material or lose the saw. Bi-metal handles wood, plastic and light metal. Carbide-tipped survives nail-embedded wood, cast iron and abrasive board, and costs several times more for many times the life. Tile, stone and glass cutters use a diamond or carbide grit edge with no teeth at all — a toothed blade chips ceramic instead of cutting it.

Depth is the limit people hit. A hole saw cuts only as deep as its cup, so a 2-3/8" saw stops at roughly two inches of material. Going through a double top plate or a thick beam needs an extension, and the extension must match the arbor thread.

Clear the plug. A slug jammed in the cup stops the cut and overheats the teeth, and the ejection slots exist so it can be levered out with a screwdriver.

Run metal slow with cutting oil; run wood fast and dry.