Shapton 30000 grit (0.49 micron) GlassStone DIN 875 Squares This machine cut rasp is

This machine cut rasp is made by Tomé Fèteira in Portugal

outside diameter

as compared to the standard pencil sharpener design which tends to twist and snap graphite

and also high frequency hardening and file sharpening systems

They are supplied with an unfinished wooden handle

Shapton 30000 grit (0.49 micron) GlassStone DIN 875 Squares This machine cut rasp isThis 30000 grit (0. 49 micron) GlassStone (50403) is a extremely fine grit. There is diminishing benefit in sharpening to this high a grit, so many may find that this stone isn't necessary for most sharpening tasks, particularly for chisels that will be used for chopping or mortising. But for those that are looking for the absolute sharpest edge possible, this stone may be the answer. The Shapton GlassStone HR series of ceramic sharpening stones are