If you need precise 47 mm holes for metalworking, cabinetry, or DIY projects, these hole saws offer durable cutting, good heat resistance, and easy arbor compatibility. The top picks below cover carbide, cobalt-enhanced HSS, and bi-metal designs, targeting stainless steel, mild steel, and wood or drywall applications. Best for professional metalworking, best for hobbyists, and best overall value are highlighted to help you decide quickly. A quick product table follows to compare core strengths at a glance.
| Product | Best For | Notable Strength |
|---|---|---|
| METALLIXITY Carbide Hole Saw 47mm | Stainless steel and hard metals | Carbide tips for durability |
| 1-27/32″/47mm Carbide Hole Saw | Stainless steel and metal sheets | Carbide teeth for longevity |
| Mollom 46mm HSS M42 8% Cobalt | Hard metals and tough alloys | 8% cobalt for heat resistance |
| Mollom 48mm HSS M42 8% Cobalt | Wide steel cutting and robust work | Arbor included, durable cut |
| 48mm Bi-Metal Hole Saw w/ Triangle Shank | Versatile wood, metal, drywall | Spring-loaded, versatile use |
METALLIXITY Carbide Hole Saw 47mm 1-27/32″ TCT for Stainless Steel Black
The METALLIXITY 47 mm carbide hole saw is designed for stainless steel and other hard metals. It uses carbide teeth to maintain sharpness under exposure to tough materials. Best for professionals cutting thick metal plates or demanding projects, where a longer service life matters. A potential limitation is that carbide tips may be more brittle if used with improper feed rates or incorrect mounting. This makes it a strong choice for precision work but not ideal for rough, fast through-holes in highly abrasive contexts.
1-27/32″/47mm Carbide Hole Saw for Stainless Steel and More
This carbide-enhanced hole saw targets stainless steel, metal sheets, copper, and mild steel. It is well-suited for workshop robots or fab shops where consistent hole quality and carbide longevity matter. Choose this if you work with mixed metals and need dependable cutting performance. A caveat: carbide tools can be heavier and may require appropriate drilling speed and lubrication to optimize life and finish.
Mollom 46mm HSS M42 8% Cobalt Bi-Metal Hole Saw with Arbor
The Mollom 46 mm M42 cobalt-bi-metal hole saw emphasizes toughness, featuring 8% cobalt for heat resistance and long life when cutting hard metals. The included arbor adds convenience for quick setup in metalworking tasks. It is best for users who frequently cut through hard steel or alloys. A limitation is that the 46 mm size is slightly smaller than 47 mm, which may require exact fitment checks for certain jigs or guides.
Mollom 48mm HSS M42 8% Cobalt Bi-Metal Hole Saw with Arbor
The Mollom 48 mm variant mirrors the 46 mm with an 8% cobalt bi-metal design and comes with an arbor. It suits projects requiring robust cutting across metal and woodworking tasks. Best for those who need a near-47 mm diameter with a touch more clearance for deburring or feed rates. A noted caution is that size tolerance and arbor compatibility should be confirmed with the drill press or handheld drill being used.
48mm/1.9″ Bi-Metal Hole Saw with Triangle Shank
This 48 mm bi-metal hole saw features a triangle shank and a spring-loaded design for easier changes and stable cutting. It is versatile for metal, drywall, iron, wood, and fiberboard. It is best for general-purpose use in mixed-material projects. It may be less ideal for ultra-hard metals or very precise, small-diameter holes where carbide or specialized tooling would excel. The triangle shank improves compatibility with quick-change systems in some drills.
Buying Guide: 47 mm Hole Saws For Metal And Wood
- Material and teeth: Carbide tips offer longer life on hard metals but can be brittle if misused. HSS with cobalt (M42) provides heat resistance and durability for tough alloys.
- Bi-metal vs carbide: Bi-metal blends favor versatility across wood, drywall, and metal; carbide is best for stainless or heavy metal alone.
- Arbor compatibility: Ensure the saw includes or matches your drill arbor. Some sets include arbors; others require separate purchases.
- Diameter precision: Confirm the exact 47 mm size with your project tolerances. A 46 mm or 48 mm variant may require minor adjustments or guiding jigs.
- Feeding and lubrication: Use steady feed pressure and appropriate lubricant for metal cutting to extend blade life and reduce heat buildup.
- Drill compatibility: Check your drill’s RPM range. Carbide and cobalt versions often perform best at moderate speeds to avoid overheating.
Frequently Asked Questions
- What is the advantage of carbide vs HSS for 47 mm hole saws?
Carbide offers higher wear resistance for hard metals, while HSS with cobalt is more forgiving and versatile for mixed materials. - Can I use 47 mm hole saws on wood?
Yes, most 47 mm hole saws are versatile enough for wood, drywall, and light metal work, though wear patterns differ by material. - Do these hole saws require lubrication?
Liquid or solid lubricants help reduce heat and prolong life when cutting metal; follow manufacturer guidance. - Is an arbor included with these sets?
Some products include an arbor; others require an additional purchase. Check the product description for arbor details. - Which 47 mm saw is best for stainless steel?
Carbide-tipped or cobalt HSS designs are preferable due to higher wear resistance in stainless steel. - What should I consider when choosing between 46 mm, 47 mm, and 48 mm?
Match the exact hole diameter to your project’s requirement; slight size variations can affect fit in jigs or guides.