MACHINE SHOP TIPS #123 Turning a Ball on the Atlas Lathe tubalcain - YouTube
9x20 Lathe Ball Turners & Knurlers
Simple Ball Turner Attachment for the Lathe | Model Engineer
CGTK - Ball Turner
MiniLathe Ball Cutter
Radius Turning Tool, cut ball-shaped end or turns a radius on lathe, cuts ball-shapes up to 3/4 inch diameter, made of corrosion-resistant blackened steel