I sharpen all different size of band saw blades.  From the table top band saws that are 62 inches and 1/4 inch thin, to the large portable mill saws that get 14 feet long and 2 inches thick.  When your trying to make level cuts, accuracy is the most factor.  I will return you saw blades back to a sharpness just like when you made the first cut with it, when the blade was brand new.