Tom,
A safety planer for my DP? I might have to look this up.
David,
In theory, perfectly smooth. I have a template cut from cardboard I will
use for the final sanding. After gluing all the rings together, I'll use a
soft pad on my orbital sander to take off the peaks at the seems (between
rings).
It really doesn't have to be perfectly round as I'm going to carve into the
sphere, around the continents, for the oceans. I might even get a map of
the worlds ocean currents and carve the oceans following that chart.
-Mac