Amazon.com: Peachtree Woodworking Supply Pro Grind Sharpening System for 8 Inch Grinders to Sharpen Lathe Turning Tools, Chisels, Skews, Bowl Spindle Gouges •Includes Setup Blocks and Quad Jig for 8 inch Grinders :
DIY Lathe Chisel Sharpening Jig - Paoson Blog - Sharpening