What Kind of Oscillating Tool Blades Cut Metal?

The main blade types and what they cut

Oscillating blades are sold by tooth material, and that material decides whether a blade can handle metal. Most brands, including DeWalt, offer the same basic families, so the labels on the package are what matter more than the logo.

The table below sums up the common choices.

Bi-metal blades: the everyday metal option

A bi-metal blade pairs hard cutting teeth with a more flexible steel body. That mix lets the teeth stay sharp in metal while the blade flexes instead of snapping when it catches.

This is the blade most people mean when they ask which oscillating blade cuts metal. It is a sensible first choice for trimming off nail heads, cutting through screws in a flush cut, and slicing thin pipe or sheet material.

If you are shopping for several sizes and styles, our best oscillating tool blades for metal page compares published specifications side by side.

Carbide blades: for harder metal

Carbide is harder than the steel used in bi-metal teeth, so it holds an edge longer in tough material. Carbide blades are the usual pick for hardened bolts, stainless fasteners and other metal that makes a bi-metal blade glaze over.

There are two styles. Carbide tooth blades have individual cutting teeth and tend to cut faster. Carbide grit blades have a rough, sandpaper-like edge that grinds through material. Grit blades cut more slowly but can work on very hard material, and they do not need the same tooth set to stay usable.

Carbide blades generally cost more than bi-metal ones, so many people keep a pack of bi-metal blades for routine jobs and use carbide only when the metal demands it.

Bi-metal versus HCS: why it matters

Shoppers often compare bi-metal and HCS blades from the same brand, and the difference is simple. HCS blades are cheaper to make and cut wood and plastic well, but their teeth are not hard enough for metal. Run one into a nail and the teeth lose their set within moments.

A common problem is cutting a board with hidden nails using an HCS blade. If there is any chance of hitting metal, use a bi-metal blade from the start. It handles wood too, so it is a safer all-round choice for demolition and remodeling work.

How to match the blade to the job

Use this quick checklist before you start a cut:

• Check the package for a metal rating. Look for the words bi-metal, carbide or a stated metal-cutting use.
• Pick the shape for the cut. A straight or flush-cut blade suits nails and screws near a surface, while a narrow plunge blade suits cutting into a panel.
• Confirm the blade fits your tool. Some brands use their own mounting style, and universal blades often fit several tools, so check the compatibility note.
• Choose harder material for harder metal. Use bi-metal for soft or thin metal and step up to carbide for hardened or stainless pieces.
• Keep spare blades handy. Cutting metal wears blades faster than cutting wood.

Cutting metal safely and getting more from each blade

Metal cutting throws sparks, hot chips and sharp fragments. Wear safety glasses or a face shield, and use hearing protection, since oscillating tools get loud against metal. Gloves help, but keep loose cuffs and jewelry away from the tool.

Unplug a corded tool or remove the battery before changing blades. The blade and the cut edge can both be hot, so let them cool before you touch them. Before cutting into walls, check for live wiring and gas or water lines, because an oscillating blade can slice through them.

For technique, clamp the work when you can, let the blade do the cutting with light pressure and use a slow to medium speed on metal. Pushing hard or running too fast builds heat and dulls teeth sooner. A drop of cutting oil on thicker steel can help, as long as it is safe for your setup.

When your tool is the limit rather than the blade, our best oscillating tool for metal guide looks at which models are built for this kind of work.

When another tool is the better choice

Oscillating blades are good for short, precise cuts in tight spots, but they are slow on long cuts and thick stock. For cutting pipe, rebar or long runs of steel, a different tool saves time and blades.

A reciprocating saw handles demolition-style cuts well, and you can compare options in our best reciprocating saw blades for metal roundup. For a broader look across tool types, see best metal cutting tool.

Frequently asked questions

Can I cut a nail with a wood blade?

It is not a good idea. A wood blade will dull quickly if it hits a nail. Use a bi-metal blade whenever metal might be in the way.

Do carbide blades cut faster than bi-metal?

Carbide tooth blades often hold up better in hard metal, but speed depends on the metal and the tool. Bi-metal can be perfectly quick on thin or soft metal.

Will any brand's blade fit my oscillating tool?

Not always. Many tools use a universal mount, while some brands use their own. Check the compatibility note on the package or your tool manual.

Why does my blade stop cutting metal?

The blade may be worn, the speed may be too high, or the metal may be harder than the blade can handle. Try a fresh blade, lighter pressure and a carbide option for hard material.