Thanks Dave.
It makes me wonder why though. After all it is easier (for me) to make a straight end instead of convex/concave taper. Tradition? I would think that it is easier to match the stave to the nock, than to try and adjust the nock. Given that, it stands to reason that the tool that makes the hole in the horn is the deciding element controlling shape. It's been a while since I have looked at medieval woodworking tools, but I seem to remember that spoon bits where the order of the day. It would be pretty easy to tweak one to make a taper like that, maybe all bits were shaped like that to start with. It really has been a while since I looked at that style of tool. Still, I just think it would be easier to do a straight taper even if you have to modify a spoon bit. But I'm looking at this from a very modern point of view, maybe it isn't easier. Bearing that in mind, does anyone know how it was actually done in period? Could they have ground the joint? As in did they rough out the hole and then use an abrasive slury (water/oil grit) to grind the pieces together until the fit was perfect? I would think that technique would leave obvious marks on the staves though and I've never heard anyone mention that. I'm just thinking out loud here. Anyone else have any ideas or even better, period documentation?
Swamp