For woodworkers,the detail-sanding heads, at right, the most useful attachments. They sand small project parts and fit in tight quarters–but don’t plan on smoothing a large panel with a multi-tool.
With a wood-cutting blade installed, you can make plunge cuts in the middle of a panel (top right photo) to create a cord pass-through in a desktop or cabinet back; trim plugs or splines nearly flush to a surface; and cut away sections of baseboard to install built-in cabinets. For such tasks, the aggressive teeth of the wood-specific blades cut slightly quicker than the combination wood- and metal-cutting blades, but left rougher surfaces. So you would prefer the cleaner cuts, ease of control, and smoother cut edges left by the combination blades. The trade-off: burning if you get impatient and push the blade too quickly.