If the comments were available, it would have been more logical. I try to never rip saw anything if at all possible. Yes, the chisel was just a demonstration of how it could have been done in clear wood. I was dealing with some serious knot whorling there. With the axe, I can rough that out down to less than an eighth-inch from the line in maybe a minute. Then I pare to the line on either side to establish the plane, and pare to the line with the slick.
I have cut some long repairs on the Wood-Mizer, but unless the mill is un-tarped and ready to go, it's not worth it on such small stuff. We have a Big Mak, but you still have to hand saw the middle of the two cuts and pare to the line. My axe is a little small, just a little 1 3/4#, but it's really sharp, and makes fast work of white pine. I spent more time messing with the camera than it would have taken me to cut the repair un-interrupted.
Tim, in the last photo of the four roughed out repair pieces, I used an all orange ripsaw to cut out the tenon. Those are 11"x14" purlin post repairs that I want to dry some before I final fit them. The big Husky made very fast work of it.
Thane, I enjoy learning the different approaches people use. We all do things according to the tools at hand, and our personal preferences. I appreciate hearing how you would have tackled the repair.