What I really want is a "concave router" bit? Is that the name?
Basically, something that looks like an cave with teeth. I am sure
that some Dutch craftman must have a dozen of them if I know where to
look.
Basically, something to attach to the end of my drill so that I can
round off the ends of the banister.
My banister cross section is an ellipse, about 1 inch high and 2
inches long.