The hell you say! I know, more adventures in anvil face prep. I went back to work on the anvil last night. I started by marking the face with a generic permanent marker that lays a heavy, dark mark-- even when retracing over previous lines. Using a 12" bastard file along the length of the face I was able to file away the high spots (picture to follow). To speed it up a little I used my angle grinder on the high spots, back to the file, back to the grinder, to the file and finally I used a 3x21" belt sander with a 40 grit belt. I wanted to use the angle grinder more, but it's both too precise (it will dig a pit) and not precise enough (that pit will be too deep and too wide) so I did most of the work with the long file. For my purposes, there's a brand new flat spot, and I'll get to use it tonight.