I've made bowls of ~1000 overlapping flattened spheres, 2 1/2 inches on the long diameters and 3/4 inch
on the short diameter. So, surfaces are textured with about 1/4" variation in height.
I'd like to learn an efficient way to smooth the crevices: where two spheres meet. The best I've found
is New Wave scuff & buff balls, like an abrasive scrub pad attaching to a drill. Sandblasting seems a good