What is the CATRA Gothic Arch edge system?
Normally when a knife or blade edge is sharpened by drawing the blade through interlocking abrasive sharpening wheels the edge bevel (or cannel in old Sheffield cutlery industry language) is slightly concave in shape following the curvature of the wheels themselves. However many knife experts believe it is better to have the bevel in a convex form, which gives an apparently sharper edge for the same tip angle. (Some experts also believe the edge is stronger, but we at CATRA don’t subscribe to this point of view). CATRA’s range of spiral interlocking wheel sharpeners can with our subtle engineering modifications sharpen all types of blades and knives with this convex (or GOTHIC ARCH shaped) edge, thereby giving that extra boost to an already very high level of sharpness.
