Rotary tools and oscillating tools are compact powerhouses that shine on detail work, quick fixes, and precision tasks across wood, metal, drywall, plastic, tile, and stone. A rotary tool uses high-speed rotation (often 5,000–35,000 RPM) to cut, grind, sand, polish, engrave, rout, and sharpen with the right accessory—cut-off wheels, sanding drums, burrs, polishing pads, and routing bits. An oscillating multi-tool moves its blade or pad in a tiny arc at up to 20,000 OPM, delivering controlled plunge cuts, flush cuts, grout removal, scraping, and corner sanding where other tools can’t reach.

Choose variable speed for better control on delicate materials and faster stock removal on tougher jobs. For oscillating tools, note the oscillation angle (typically 3–5 degrees) and interface compatibility (OIS, Starlock, or universal fittings) to match a wide range of blades and sanding pads. Quick, tool-free accessory changes save time on the job. Cordless models with brushless motors and high-capacity batteries offer strong runtime and portability, while corded versions provide consistent power for shop use. Look for ergonomic grips, low vibration, LED lights, and dust collection options to improve comfort and cut cleanup time.

Applications include:
- Rotary tool: trimming bolts, deburring metal, sharpening mower blades, carving and engraving, precision routing, polishing hardware.
- Oscillating tool: undercutting door jambs, flush-cutting casings and shims, cutting drywall openings, removing grout and caulk, scraping paint and adhesive, sanding into tight corners.

Buying tips:
- Match power to task: amps for corded, voltage/Ah for cordless.
- Stock up on quality blades and bits; bi-metal and carbide last longer.
- Check accessory availability and cost across the brand’s ecosystem.
- Prioritize dust control and PPE for safer cutting and sanding.

Whether you’re a DIYer or a trade pro, a well-chosen rotary tool or oscillating multi-tool can speed repairs, improve accuracy, and expand what you can accomplish with one compact package. Search top-rated models, compare RPM/OPM, and build out your accessory kit to tackle cutting, sanding, grinding, and polishing with confidence.