Rotary Tool or Power Drill for Small Holes: Which Fits the Job?

For most ordinary small holes, start with a power drill. It works when you have a bit made for your material and the bit's shank fits the drill's chuck. A rotary tool is the narrower choice, and it only makes sense when that exact tool's instructions cover drilling and its collet fits the bit you plan to use.

Tool size doesn't decide this, and neither does a headline spec like top RPM. No single hole diameter tells you to switch tools either. Base small-hole drilling on three things: the hole you need, the material, and whether your tool can hold a bit that suits both.

Which Tool Fits an Ordinary Small Hole?

A power drill is the simple default for an ordinary small hole. This is practical shop guidance, not a measured performance win over rotary tools. The drill is the right pick when two things are true: the bit is meant for your material and hole, and its shank is within the drill's rated chuck capacity.

A rotary tool comes into play only under narrower conditions. A drilling setup does exist for some of them. For example, Utah State University's Dremel instructions list a drilling attachment for making holes in objects made of various materials. Those instructions don't name a specific tool model, though, and they don't give drilling limits for any model. So treat that as proof the category can drill, not as approval for your particular tool.

In practice, use a rotary tool for a small hole only when both of these hold:

• The manual for your specific model covers drilling.
• Its collet takes the shank of the bit or accessory you plan to use.

If you can't confirm both, go back to the drill. Don't assume a compact rotary tool can drill a hole just because the hole is small or the tool spins fast. No-load RPM tells you nothing about how the tool performs once the bit is cutting.

How the Material, Bit, and Holder Change the Choice

Pick the bit for the job first, then check that the tool can hold it. These are two separate questions. A bit that fits the holder tells you nothing about whether the tool and bit suit your material.

Work through these checks in order:

• Name the material and the hole. Write down what you're drilling into and the hole you need. That narrows down which bits make sense.
• Choose a bit made for that use. Read the bit's packaging or documentation and confirm it covers your material and hole type. The material can change which bit fits, so don't skip this step.
• Check the drill's chuck. Chuck size means the largest shank diameter the jaws can grip. MSC Direct's guide to drill chuck capacity says to match the chuck to the largest bit shank you plan to use. Capacity is a gripping limit only. It doesn't measure performance.
• Check the rotary tool's collet. A collet is the small sleeve that clamps an accessory's shank. In the Dremel setup described by Utah State University, the collet size should match the attachment's shank. If the shank is bigger, use the correct collet. Don't force it in.
• Confirm the tool is meant for drilling. Even with a perfect fit, check that your specific model's instructions cover drilling. If they don't, use the drill.

The chuck or collet check confirms only that the parts fit together. It doesn't tell you the tool can drill your material. That depends on the bit's rated use and on the tool's own documentation.

If you're drilling with a Fanttik rotary tool or another Fanttik tool, you can find a Fanttik manual for your model to check which accessories and tasks it covers.

FAQs

Does a higher-RPM rotary tool drill small holes better than a drill?

Not necessarily. No-load RPM is how fast the tool spins with nothing touching it. It doesn't show how the tool behaves once a bit is cutting into material. Choose based on bit fit, material, and what the tool's documentation says, not the speed rating.

Can I use a drill bit in a rotary tool if it slides into the collet?

Fitting into the collet is only the first check. The shank should match the collet size, and you shouldn't force a larger shank in. After that, the tool's instructions still need to cover drilling, and the bit still needs to suit your material.

Is there a hole size where I should switch from a drill to a rotary tool?

There's no universal cutoff. The deciding factors are whether a suitable bit exists for your material and hole, and which tool's chuck or collet can hold that bit. Check those for your specific tools instead of going by a diameter rule.

What if my bit's shank is bigger than my drill's chuck capacity?

Then that drill can't grip the bit properly. Choose a bit with a shank inside the drill's rated chuck capacity that still suits your material, or use a tool whose holder is rated for that shank.