This particular carborundum grinding stone, used by stained glass folk, seems to be pretty popular and trusted when you are not going to use a machine for edge management. I notice this is the same product offered at trusted glass art supplier sites, and it39;s the same product offered on line here with amazon. This is a competitive value for the product.February 6, 2011 B004MG46FI
Precision grinding wheels from Carborundum set the standard for surface grinding, tool and cutter grinding, drill grinding and precision tolerance operations. Ideal for a range of materials from easy to hard to grind tool steels and other metals. See the full Precision Grinding Wheels range.
Carborundum stones are sharpening stones made from silicon carbide. This is a rigid material; it can sharpen every knife that you have. Taking a look at the Mohs scale, silicon carbide has a hardness score of 9 9.5. Now that is hard! You may not realize it, but silicon carbide is all around us. Its hardness makes it a very useful material.