"Richard Evans" wrote in message

Not really. On a table saw, use two miter guides set to 45, one on
each side of the blade. Make one cut on one side, then make the mating
cut from the other side. Even if you don't have exactly 45, the two
cuts will be complementary and join perfectly.


He'd building a deck. Cutting the 45's on the end of a 12' board on a
tablesaw will be a PITA.