Then cut down to the length of nock that you want
It may not look like much at this point, but it will be fine. Next, round it out to the shape of the cane.
Now we are ready to cut in the string groove. I cut a starting groove with the band saw (if your not used to power tools, just use a hack saw!) Keep the line centered in the antler. (very important)
Then clamp the nock into a vise and use a tile saw blade in your hack saw to finish out the groove.
be sure to take a good angle with the saw in the bottom of the string groove to keep from having any sharp edges.