Speed range and collet size decide which accessories are worth buying
A rotary tool spins small accessories fast enough to sand support marks off a print, cut a plastic part, polish a metal edge or engrave a name, and it is the finishing tool on most maker benches. Speed range is published in revolutions per minute with a control that is variable or stepped, and low speeds matter as much as high ones because plastics melt when an accessory spins too fast. Power in watts describes a corded motor; a cordless tool is described by its battery voltage and capacity, and the two do not compare directly. Collet sizes decide which shank diameters fit, and a tool with a common collet or a keyless chuck accepts the widest accessory catalogue. The accessories included are counted largely on the box, and the count says less than the types: cutting discs, sanding drums, polishing wheels and burrs. A flexible shaft lets the motor hang while a pen-sized handpiece does fine work. Attachment compatibility — routing bases, cutting guides, a drill stand — follows the brand, and third-party parts fit some bodies and not others. Then weight, noise, vibration and how the collet is locked. Cutting discs shatter and dust flies, so the eye protection and guards the maker specifies apply. We compare speed range, power or battery, collet sizes, accessory types, flexible shaft and attachment compatibility.
Cordless, 380 mAh battery · 3 speeds: 5,000, 10,000 and 15,000 rpm · copper collets · for small, light projects only
A small cordless rotary tool on a 380 mAh battery with three speeds up to 15,000 rpm and copper collets, which its maker restricts, in capitals, to small and light projects.
Best for: Light engraving, polishing and sanding on crafts, where a cord would be the main nuisance.
≈ 16 €
200 W · 8,000–35,000 rpm, 6 speeds · 3-jaw universal chuck for 1/64 to 1/8 in shanks · flexible extension shaft · 135 accessories · carry case and clear guard
A 200 W corded rotary tool with six speeds from 8,000 to 35,000 rpm, a three-jaw chuck taking shanks from 1/64 to 1/8 inch, a flexible extension shaft and 135 accessories in a carry case.
Best for: A general-purpose kit for carving, sanding and cutting, using accessories bought from other brands.
≈ $40 / 30 €
Cordless engraving pen · 5 speeds · 700 mAh, over 2 h · USB-C charging in about 1 h, cable not included · 3/32 in (2.3 mm) collet · 20 engraving bits · 32 dB · LED work light · 0.10 kg
A pen-shaped cordless engraver weighing 0.10 kg with five speeds, a 3/32-inch collet, 20 engraving bits, an LED work light and a 700 mAh battery the listing rates for over two hours.
Best for: Fine engraving and detail work on wood, glass and metal, held like a pen.
≈ $76 / 60 €
170 W corded · 8,000–35,000 rpm, 6 speeds · 1 m flexible shaft · 173 accessories · replaceable motor brushes · chuck tightened with a wrench
A 170 W corded rotary tool with six speeds from 8,000 to 35,000 rpm, a 1 m flexible shaft, 173 accessories and replaceable motor brushes, whose chuck must be tightened with a wrench before use.
Best for: A workshop user who wants a long flexible shaft and a tool whose brushes can be replaced when they wear.
≈ 37 €
130 W · 0–35,000 rpm, 5 speeds · 120 accessories: grinding and polishing wheels, stones, cutting discs, cutters, drill bits · storage bag · small jobs only
A compact 130 W rotary tool with five speeds up to 35,000 rpm and 120 accessories including grinding wheels, cutting discs, cutters and drill bits, sold with a storage bag and described for small jobs only.
Best for: A household kit for occasional engraving, cleaning and small cuts.
≈ 30 €
130 W · 10,000–33,000 rpm no-load, variable · 1 attachment and 25 accessories · EZ Twist nose cap · works with Dremel accessories and attachments
The Dremel 3000 rotary tool at 130 W with a variable no-load speed from 10,000 to 33,000 rpm, an EZ Twist nose cap, one attachment and 25 accessories, compatible with Dremel’s range of accessories and attachments.
Best for: A maker who wants to build on a large attachment ecosystem over time rather than buy a big kit now.
≈ 62 €
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