Woodworker's Guide to Sharpening - Hardcover Professional Machine however there are always some

however there are always some pieces of raw stone that won't fit into those standard rectangles

They do not work with either of those honing guides unless you have converted them to the larger wheel size using the Kell Retro Fit Large Rollers

This is the replacement wheel for the Wolff Corru-Gator

Machine Mounting Stand

Woodworker's Guide to Sharpening - Hardcover Professional Machine however there are always someThe Woodworker's Guide to Sharpening is an easy to follow book on sharpening woodworking tools. The book focuses on sharpening woodworking tools and the materials and methods used in sharpening woodworking tools. Hardcover version. Written by John English. Published by Fox Chapel Publishing. 155 glossy, full color pages. Woodworker's Guide to Sharpening Chapters Chapter 1 Safety Overview Chapter 2 Introduction to Steel Chapter 3 Introduction to Bench