I have cut lots of Ipe and routed lots of slots in Ipe. Oddly I get MUCH
better mileage out of a HHS end mill bit than using the common carbide bit.
That said, a common saw may cut the wood but will you live long enough to
finish the cut. There is going to be a lot of effort on your part. Can you
notch the posts with a router bit?


I could notch the posts with a router bit, but at least my immediate
thoughts on how to do it are to either use the router table, which
would probably be pretty awkward with the whole rest of the heavy post
sticking out, or to use a jig where the router sits on a wide base
plate and rides on fixed height rails. The last time I did this the
setup time was considerable.

Surely cutting on the band saw shouldn't be effort even if it takes 5
minutes to make the cut. I guess there's the matter of supporting the
wood. I would definitely imagine that using a hand saw would be a lot
of effort.