Originally Posted by
Peter Quinn
Huh? Did you sight it to make sure it was flat? I can tell you that not every jointed piece of stock that leaves my planer after several passes comes out flat. But assuming it was as straight as Billy Grahm, my next check would be the miter station tables. check to see that the tables are flat and not lifting the stock. After that, I'm going with wood tension being released. I'v certainly seen it on both the SCMS and a sliding panel saw, enough to slow the blade and burn the stock. I make a habit of never cutting wider boards right to length, I always go about 1/4" over, then take that last 1/4" of in a second pass just to avoid any burning that may come along with the pinching that's caused by the release of tension. Doesn't make that kick back any less scary though.