Hi, I have a question. I am trying to bevel my board 1 degree on the base. I got a SKS Multi tool for both the base and the edge. It is this, SKS Base/Side Edge Bevel Multi Tool (includes file). I filled in the base edge with a sharpie, the sharpie seems to come off with 1 or 2 pass, and takes a bit of the base off. Is this suppose to happen?