Set your tool rest up so the blade bevel is ground at
about 30°, minimum 25° - maximum 35°. When grinding your blade
use a light pressure against the wheel and keep your blade
moving back and forth across the wheel. This will minimize the
chance of burning the blade. If the blade starts to get hot, dip
it in some water before it burns. Normally you will only need to
grind about 0.5mm from the edge, unless you need to grind out a
chip in the edge. Remember a hollow ground blade takes a lot
less time to sharpen.
Prior to sharpening your blade check that your stones are flat
by rubbing them on a known flat surface, such as 10mm plate
glass, which has some 180 grit sandpaper glued to it. Remember
you can’t get your blades sharp if the stones are not flat. You
should be able to sharpen about 10 blades before the stone will
need re-flattening.
Secure your 1000 grit and 6000 grit stones on
a board that is held securely on your bench. If your stones are
moving it is difficult to get a good result and you may damage
the stone. It is a good idea to keep your 1000 grit stone in a
water bath when not in use.
If it is a new blade, you may need to hone the back of the
blade quite a bit, until it is completely flat at the edge.
To sharpen your blade, first hone the 30° bevel on the 1000 grit
stone. We recommend a straight back and forth action using the
full length of the stone. Hold the blade slightly skewed on the
stone and put more pressure on the front of the bevel. This will
help hold the bevel flat on the stone. If it is a thin blade, a
honing guide may be beneficial.
Put plenty of water on the stone as this will
clean the pores of the stone, letting it cut quickly. Keep
honing until you feel a wire edge appear on the back of the
blade. This should take less than 1 minute. If it takes longer,
this indicates you will need to re-hollow grind the bevel. If
the back of your blade is already flat and nicely polished you
can go straight to the 6000 grit stone to take the wire edge
off.
Now you are ready to give the blade a final hone, which will
refine the edge to a perfectly clean, straight facet, which will
stay sharp for a considerable period of planing. We recommend
honing a micro bevel at this stage. To do this, place the bevel
flat on the stone, start moving it back and forth, then raise
the bevel slightly, about 2-3°, until you hear a slight scraping
sound - this will indicate you are honing the micro bevel.
Hone the edge until you feel a wire edge on the back of the
blade, then polish the back of the blade. Let the grey slurry
build up and dry out. Do the final honing strokes on the bevel
and back of the blade through this slurry. The slurry clogs the
stone, making it cut finer, improving the blade edge.