I have been asked by a few members to write some kind of instructions on how to sharpen serrated or part-serrated blades, like those found on the Spyderco range.

OK, what I've written above is how to sharpen the plain-edge of the blade, now for the serrated part of the blade.

What you have here is an edge made of a repeating tooth pattern, and to sharpen it you'll need a diamond-coated rod, like this one.

Place the rod, side on, to the large 'scallop' of the serrated edge and slowly rock it across the angle of the edge to find the 'flat' of it. Then, with slow, even strokes file the rod gently across the scallop - this will eventually put a nice new 'bite' on the scalloped edge.

Repeat this for each scallop on the edge [we do nothing to the smaller scallops, as they actually are very limited in their cutting power].

Finish by lightly stropping the non-serrated side[not edge] of the blade. This will straighten out any burrs you may have put onto the edge.

Serrated knives are great for cutting rope etc, but their use is severely limited to most field duties, like skinning and carving.