I know that many segment turners recommend flattening segments (or adjusting angles) with a disc sander. But I have never been able to get a perfectly flat surface with my 12" disc sander. I have tinkered with the adhesive on the disc, tried using different areas on the disc, etc. But I never get a flat surface that can match the flattness that I get with the table saw or jointer. Am I expecting too much, or is there something I can do about it?
TIA
Galanw