This is the other point.
I made a antler indirect tool and made the preform with it from a Georgetown flake.
Pressure flaked it with antler and started the notches with antler but didn't get too far before I had to get the copper flaker out and restart the notches after stalling them out close to the edge with the antler.
I just starting to use antler, and I like it very much, I get the edges to strong and don't know the set up angles needed yet but
Antler is awesome to knap with