I made a pair from random 1/2" bevel edge socket chisels and I made the angle
45°.  It is very easy to use the entire edge of the chisel to cut into the side
of a tail or pin by pushing on the side of the blade. One has an original handle
that was short, and one I made out of Osage Orange a little longer and they are
about right

https://www.flickr.com/photos/ruby1638/32169097121/in/dateposted-public/


Ed Minch