What blade width means
Blade width is measured from the back of the blade to the tip of a tooth. It is different from blade thickness, which measures the steel strip from side to side.
Curved cuts and straight cuts
Narrower blades are generally used for tighter curves. Wider blades provide more support for straighter cuts. These are general principles, not a model-specific manufacturer recommendation.
Choose within the supported range for your exact saw. Check the blade manufacturer’s turning-radius guidance for a particular width and tooth configuration.
Do not treat the included blade as the maximum
A product page that says “includes a 3/8-inch blade” establishes the supplied blade size. It does not establish the machine’s minimum or maximum supported width.
Some narrow blades require different guides, cool blocks or other equipment. Conditional ranges are marked for verification in this database; the manual’s conditions must still be checked.
For model-specific requirements, use the Finder and follow the manufacturer documents linked on the model page.