"sal" wrote in message
...
Can someone tell me how to make accurate 45 % cuts that actually fit
together nicely? I was building an deck and have some herringbone and
mitered joints that were an devil to do , using number 2 grade spruce. I
love making sawdust.

Sal


One last thing to consider. If you are trying to come up with a particular
angle and the boards do not intersect at the correct angle the cuts will
never fit.
Often a novice when trying to make a square frame with 45 degree mitered
cuts one of the joints will not close properly. This is because either the
opposite sides are not perfectly parallel or the opposite sides are not
exactly the same length.