[math-fun] YouTube: Making a sphere on a lathe

FYI -- several months ago, we discussed how to make a spherical object with a lathe, as might have been done circa 1500AD. Here's an 11-minute YouTube video showing exactly this process: https://www.youtube.com/watch?v=hZT0ZTvRFxI #40 Hybrid Sphere Burl & Resin "Red Dawn"