Buy Metal Hole Saws Online in Australia
Metal Hole Saws for Steel, Stainless, and Industrial Cutting in Australia
Metal hole saws cut clean, precise circular holes in steel, stainless steel, aluminium, and other metals for conduit entry, pipe fitting, panel work, and structural fabrication. Unlike step drills (which work up to about 30mm), hole saws handle diameters from 14mm to 210mm and produce a clean-edged hole without distorting the surrounding material. AIMS Industrial stocks bi-metal and carbide hole saws from Sutton Tools, Bordo, and Starrett for Australian trade and industrial customers.
Bi-metal vs carbide hole saws for metal cutting
- Bi-metal hole saws — HSS teeth on a flexible steel body; the standard choice for steel, mild steel, stainless, copper, aluminium, and multi-material cutting. Tooth form is typically variable-pitch (wavy-set or progressive) to reduce vibration and loading. Cost-effective for trade and general fabrication
- Carbide-tipped hole saws — harder teeth for abrasive materials, harder grades of stainless, cast iron, ceramics, and fibre-cement (FC). Longer tool life in abrasive conditions at higher cost. Not the right choice for thin-gauge steel where the carbide teeth may chip
Sizing for common trade applications
- 20mm — 20mm conduit entry
- 25mm — 25mm conduit entry
- 32mm–51mm — standard pipe and conduit sizes
- 67mm–76mm — knockouts for enclosures and switchboards
- 100mm+ — large penetrations in structural steel and plate
Mandrels and arbors
Hole saws attach to a drill via a mandrel (also called an arbor). Standard mandrels accept a range of hole saw diameters (typically 14–30mm or 32–210mm) and include a pilot drill for centring. Quick-change mandrels allow faster saw changes on production work. Check that the mandrel shank size (typically 3/8" or 1/2") matches your drill chuck.
Cutting technique for metal
Run at lower RPM than for wood — metal cutting generates heat that destroys teeth if the speed is too high. Use cutting fluid or cutting paste on steel and stainless to reduce heat and extend tool life. Apply steady, even pressure — don't force through. For thin sheet, back the workpiece with a sacrificial timber block to prevent tear-out on breakthrough and keep the workpiece stable. Clear swarf from the gullets regularly on deep cuts.
Related products
See also: drill bits for smaller holes, angle grinder accessories and cutting discs for non-circular cuts, and step drill bits for thin-sheet holes up to 30mm.
For specific diameter requirements or volume supply, contact our team.