When cutting on the table saw do you cut with the cup up or down??? and Why???
I cut with the cup up so that as the saw passes through the material, the piece between the fence and the blade can't drop down and pinch, causing a kickback. Depending on the severity of the cup and what the finished dimension of the piece will be, there are safer methods of resaw cupped material.:)
Cup down with a shim hot glued to the center, that way the wood is suported on its two outside edges so it can't rock while cutting.
Jointer first, cup side down, then nice flat surface on the table saw.
No matter what direction you put the cup side on a table saw you run the risk of the wood binding and kicking back... assuming you're doing a rip cut.