Small Ball and Radius Turning Tool - Designed to Cut Round Shapes or Curves in Brass, Aluminum, Steel, Wood or Plastic on your Bench Top Metal Lathe, LittleMachineShop.com (2569) - Amazon.com
Turn a Sphere
The Perfect Sphere: A Well-Rounded Tool | Canadian Woodworking
Lathe – ball-turning, spherical surfaces, concave and convex | john f's workshop
best sphere jigs?
Sphere-Turning Lathe Attachment - FineWoodworking
How To Make Perfect Sphere On The Lathe With This Jig | Woodturning - YouTube
MiniLathe Ball Cutter
Making a ball (sphere) on the lathe
Simple DIY sphere making tool for the wood lathe - metalworking - YouTube
Packard Woodworks: The Woodturner's Source: Carter Perfect Sphere Tool