Robert Sorby ProEdge Aluminium Oxide Belts
This common abrasive is designed primarily to sharpen carbon steel bench chisels, carving tools and plane irons but will also hone harder high speed steel tools.
The material longevity is at the lower end of the abrasives scale they use on their belts, but makes an excellent economical choice. Work your way through grit sizes (heavier grits for the removal of more material) to achieve a fine finish...
Robert Sorby ProEdge Ceramic Belts
This hardwearing material is a great choice for profiling and re-profiling damaged tools.
The heavier 60 grit option is an efficient choice for removing plenty of material, while the finer 120 grit will provide a satisfying finish. Great longevity and highly practical.
Robert Sorby ProEdge Trizact Belts
Perhaps the most popular in the range of belts. This robust material is designed to handle the demands of all steels. Not strictly 'grit sizes' these belts are built using brick and pyramid abrasive shaping.
The highest 3000 'grit' size will sharpen to two microns (the same sharpness as a disposable razor blade) and provide a factory finish on all steels.
Robert Sorby ProEdge Zirconium Belts
Designed for HSS tools, drill and router bits this material provides good value.
The 60 grit belt will tackle the most damaged surface. Use the 120 grit to provide a rewarding cutting edge and finish.