Using a hole saw is the absolute easiest way to cut circles in wood for your project. All you have to do is lock your hole saw in the chuck of your drill or drill press and start cutting. You can use hole saws to cut circles from ¾ inches up to 7 inches in diameter. If you're making cornhole boards, you'll want to use a 6" hole saw.

Using a woodworking file to round wood’s edge is pretty safe and needs only medium-level strength. Moreover, This method is perfect for making a smaller radius. a) First, select the template of your desired shape and place it on the woodwork you want to round. b) After that, carefully mark the edge for rounding using the template and a pencil.