Will Kwan's sharpening method. Sent via email to me:
The H.I. khukuris are relatively soft and extremely easy to sharpen. What I
usually are the ceramic sticks from my Spyderco sharpener, a tabletop, a
C-clamp, and if Im in a hurry the course stone from my Lansky sharpening kit.
I usually sharpen my khukhuris free hand using the stones as files. Because
the blade is wide the highest angle on the guide type sharpening kits would be
too low. While the Spyderco follows the curves of the khukhuri well, I find
that I can not keep a very consistent angle where the blade starts to angle
forward.
First I clamp the blade flat against the table and lock the edge parallel to
the ground. Next, I select my stone. If it is a new khukhuri, I start with
the course Lansky stone since Uncle Bill sends me his dullest. Normally, I
would use the fine white ceramic stone from the Spyderco sharpmaker (the
Lansky fine and medium stones will work well but require oil). I estimate to
the best of my ability a 20-25 degree angle and use the stone as a file on one
side of the khukhuri. Pressure is applied as the stone is pushed towards the
blade and metal is removed. Push the stone diagonally towards the edge so
that the stone moves along the length of the blade. Start on the next stroke
on the edge where you finished off. Then start from the beginning until a
wire edge or burr could be felt on the opposite side. Next, I flip the blade
over and remove enough metal so the burr is on the opposite side.
Now I remove the wire edge with the fine stones. The sharpening angle is
increased to 25-30 degree i.e. about 5 degree more than the first process.
Use no more pressure than the weight of the stone and file the burr off one.
It will most likely bend over onto the opposite side and will have to be
filled again. Repeat until you can not feel a burr on either side.
This is the more satisfying part of sharpening. Very gently, using no more
pressure than the weight of the stone, using the stone as a file, do the edge
once. Flip the knife over and redo the opposite side. There will be an
increase in sharpness with each repeat. Stop when you are happy with the edge
performance.
The khukhuri will require only the last step for sharpening until the initial
bevel is worn away. After a while the initial bevel will be worn away and
the whole process must be repeated. This wont happen very soon.
Also, check out the sharpening FAQ in the knowledge base and sharpening
threads in the H.I. forum.
Will