Can You Use a Hole Saw Kit on Metal, Wood or Plastic?

The short version: blade material decides

A hole saw is a round saw blade that spins on an arbor in your drill. It cuts a ring and leaves a plug of material in the middle. That design works in many materials, but the teeth have to be harder than whatever they cut.

Wood is soft, so almost any hole saw handles it. Plastic is also easy, though it can melt if you push too fast. Metal is the demanding one. Teeth made from plain carbon steel dull quickly on metal, which is why the kit's blade material is the first thing to check.

Our best hole saw kit page ranks kits by their published specs, and it follows the same rule: pick the material first, then the size count.

Using a hole saw kit on metal

Metal needs the right blade and a patient hand. Bi-metal blades with 8% cobalt, like the M42 saws in the EZARC and Bosch kits, are listed for metal. The EZARC listings mention thin metals, and the Bosch listing says its saws suit wood, metal and plastic.

The dashap carbide kit makes the most specific claims. Its listing says the saws cut 3 mm stainless steel, 15 mm iron plate and 15 mm aluminum alloy, and it recommends oil or coolant when drilling at high speeds. Those are the maker's claims, not our findings.

Carbon steel kits are a poor match. The KATA listing says its saws are not intended for thick metal, tile, concrete or stone. One of the 14-saw carbon steel kits on our page says outright that it is not for metal.

Using a hole saw kit on wood

Wood is where a hole saw kit is most at home. Softwood, plywood, MDF and drywall are all fair game for most kits, including carbon steel ones. The KATA listing names softwood, plywood, plasterboard and thin board, and calls its kit a fit for light to medium duty home work.

Depth matters more in wood than the blade does. Cutting depth is how thick a board one pass can cut. The KATA saws are listed at about 1 in, the EZARC bi-metal kits at 1.89 in, and the Spyder at 2.375 in. For a thick beam or a stack of boards, a deeper saw saves you from cutting from both sides.

To avoid splintering on the exit side, clamp a scrap board behind your workpiece, or drill until the pilot bit breaks through and finish from the other face.

Using a hole saw kit on plastic

Plastic cuts cleanly with most kits. The EZARC listings include plastic sheets and PVC boards. The KATA listing names PVC board and thin plastic, and the Spyder lists plastic among its materials.

The risk with plastic is heat. Teeth that spin too fast or press too hard can melt the edge and gum up the blade. Use a moderate speed, let the teeth do the cutting and back the saw out now and then to clear chips.

Thin or brittle plastic can crack. Clamp it flat against a backing board so it does not flex.

Material and blade at a glance

This table summarizes what the listings say for several kits on our comparison page. Check the listing for any kit you plan to buy.

Treat it as a starting point, since a listing claim is not a guarantee of how a saw will behave on your exact material.

Step-by-step: cutting a clean hole

The basic method is the same in every material. Only speed, pressure and lubrication change.

• Mark the center and clamp the workpiece so it cannot spin.
• Fit the pilot bit and the right saw on the arbor, and tighten it firmly.
• Start slowly with the pilot bit on your mark, then bring the saw teeth into contact.
• Keep the drill square to the surface and use steady, light pressure.
• For metal, use a low speed and add cutting oil or coolant as the listing advises.
• Pull the saw out regularly to clear chips and let it cool.
• Remove the plug once the saw stops, using the ejection slots or the spring if your kit has one.

Safety and when to use another tool

Wear eye protection every time. Chips fly, and metal pieces can be hot and sharp. The dashap listing also recommends gloves, but skip loose gloves near a spinning bit if they could snag. Add hearing protection when you cut metal, since it can be loud.

A hole saw can grab and twist the drill hard. Hold the drill with both hands, keep your stance stable and clamp the work. Unplug a corded drill, or remove the battery from a cordless one, before changing saws.

Hole saws cut round holes only. For long cuts or thick stock, other tools do better. Our guides to the best reciprocating saw blades for metal and the best hand saw for cutting metal cover straight and rough cuts in steel.

Frequently asked questions

Do I need a pilot bit?

Yes, in most cases. The pilot bit centers the saw and keeps it from wandering at the start. Most kits include one or more.

Can a hole saw kit cut tile or masonry?

Only some can. The Spyder listing mentions ceramic wall tile and porous concrete block, while the KATA listing says not for tile, concrete or stone. Confirm the listing first.

Why does my saw smoke or stop cutting well?

Heat is the usual cause. Slow down, ease off the pressure, clear chips often and use oil or coolant on metal.

Will a cordless drill work?

The dashap listing says its saws work with rechargeable, hand, bench and electric drills. Larger saws and metal draw more power, so choose a drill with solid torque.