The width of your bandsaw blade and its tooth set will determine the smallest circle you can cut without damaging the blade or the saw guides. Generally a 3/16-in. blade will cut a radius as small as 5/16 in.; a 1/4-in. blade will cut as small as 5/8, and a 3/8-in. blade as small as 1-7/16. The wider a blade, the thicker it will be and the longer it will stand up and keep its edge.
Blade Radius
