A new plane blade is ground straight across. When cambering a blade by hand, not using a grinder, what are the techniques used. I try to keep the angle ( 30 degrees ) the same but turn the approach of the blade so the left and right edge lead. There is the tendency to lift the opposite side of the blade but I find the process confusing. I am looking for advice for those who camber almost all their blades, smoothing, jack, etc. by hand.