I recently purchased a Sorby spindlemaster and I was a bit confused when the guy at the Rockler store where I got it told me that you only need to run a diamond file over the flat side and not to grind the bevel. My question is, isn't there going to come a time eventually where I'm going to have to grind the bevel to get the sharp edge back? Also, how can you use it like a skew? So far I've used it almost like gouge, but only tilting it slightly from side to side. I know there's got to be a more efficient way to use this tool! Thanks guys.