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• This tiny thing is good for working on printed circuit boards and other miniature electronics projects.

• Some dogs and cats don’t like having their nails trimmed with a clipper. These pet nail die grinders can, in theory, be used instead. Just not on our dog.

• Anything shaped like this is a Dremel tool, regardless of who makes it, and regardless of whether the Dremel tool company likes you calling it that or not.

• Angle Grinder Wood Carving Disk

• A pneumatic die grinder set makes a perfect gift for anyone who doesn’t have a pneumatic die grinder (and does have an air compressor).

• Angle Grinder

• Pneumatic angle grinders are lighter than electric for a given amount of power. But you need a very large air compressor to keep a big one like this going.

• I used this brute of a machine with a wire cup brush to grind off all kinds of old paint and loose mortar from my basement wall. It will tear you up.

• Diamond Mini Cutting Disks

• A picture cannot do justice to the cleverness of this razorblade sharpener. Turning the crank spins the grinding wheel inside, but also flips the razorblade over every few turns, so both sides get sharpened equally.

• Diamond Mini Point Bit Set

• A muller, origin of the phrase to “mull over an idea” is a very fine grindstone used on top of a sheet of glass to grind pigments for paints or cosmetics (paints used on the face).

• Smaller angle grinders are a lot easier to hold up after an hour.

• Mid-sized angle grinders with plastic bodies are much lighter than the monster on the left. Just holding that beast up for any length of time can be exhausting.

• Sharpening stones come in a range of grits. You start with coarse stones to get out any nicks and shape the blade overall, then switch to finer grits to refine the edge. Even finer grits are covered in the next section on Sandpaper.

• Air Die Grinder

• This tool is used to lap (very finely grind) the valve seat (mating surface) of an intake or exhaust valve in an internal combustion engine.

• There are dozens and dozens of different shapes and sizes of bits available for die grinders.

• Diamond Grinding Wheel

• Lots of other disks

• Course rotary tool wood rasps can be used to carve and shape wood delicately, or violently. They are used by sculptors and furniture makers.

• This is battery-powered foot grinder.

• Pink Nail Grinder

• Mortar and pestles—especially the stone kind—are domestic grindstones suited to grinding up herbs and medicines.

• Wooden Mortar and Pestle

• If you use a sharpening stone long enough, it will wear down.

• Sander-Polisher

• Rotary Tool

• Wood Rasps

• Sharpening Stone

• Rotary Tool

• Dremel Tool

• Die grinders with vane motors go fast, but not as fast a dental drills.

• Air Die Grinder

• This older model cordless angle grinder is definitely at the low end of power and endurance. Newer ones are getting pretty good, but still can’t compete with a truly heavy-duty corded model.

• Angle Grinder

• Dewalt Angle Grinder

Do you have a better example of this kind of tool? Let me know by leaving a comment, and include a picture of it if you can so everyone can see!