I think you and I are talking about 2 different things. I'm not talking about sharpening angles, only the length of the bevel that is the edge. If I sharpen my gouge with one angle I have a bevel of say 3/8" that goes from the tip to the lower corner of the bevel. If I remove much of the metal from this bevel so that I only have 1/8" of the original bevel, I get exactly the same cut. That's what I'm trying to describe. In drill bits or metal cutting bits this is often called a clearance angle if I have my definition correct. In a drill bit you have a very short main bevel or cutting edge and then it's ground off behind this to give you a clearance angle. That is essentially what I'm doing with my bowl gouge. Hope that clears it up.