I just received my two cherries 1/2" chisel in the mail today! I am wondering something though, is there a way to grind off the sides so it is more of a triangle shape but with a flat part on top to help with sharpening it? The reason being for chopping out the waste in dovetails, so it won't leave that small 1/8" or so square part on the corners. And if this is do-able, would it just be done by eye, or is there some kind of jig to use to hold it right? Thanks for any help!