There is no one-size-fits-all answer to this question, as the blade size required will depend on the width of the blade and the thickness of the wood being cut. Some tips on choosing the right blade size for your band saw include ensuring that the width of the blade is equal to or greater than the width of the wood being cut and selecting a blade size that is appropriate to the type of wood being milled. For more information, please refer to the band saw owner's manual.