22
Manual de instrucciones-Instruction manual Versión-Version 2017
10.1. ways of the sharpening
Generally there are two sharpening, that is to sharpen it on a sharpener. The other is hand
sharpening to make it keen on a sharpening stone by hands. There are some sorts of
sharpening stones-natural oil stone, artificial oil stone, fine blue stone, inkstone fineness,
adequate hardness, with no grain of sand, or any other solid grain.
Steps to sharpen the blade
As showed in illustration: fasten the screw on one end of handle into a screw hole of the blade,
it is for the worker to choose the hole he prefers.
Insert the back part of the slicing blade into the blade shell.
Clean dust, direct and other stuffs off the blade.
Coat over the sharpening stone with spindle oil or pararrin oil, then put the blade on the
sharpening stone with an angle a between the blade edge and the stone. To guarantee that
the angle a for the first sharpening equals to any angle a for its later sharpening, a definite
blade shell should be used for a definite blade only.
With your right hand holding the handle, your left hand holds the blade shell and moves the
blade edge to and fro on the stone. Make it a point that all parts on the edge are sharpened.
When your push the blade on one of the two sides, you should pull it back on its other side so
that both sides of the blade get fair chances for sharpening. Go on working this way until the
edge is well adapted to cut. To test that your finger is on a line of very small needle points, it
hints that the edge is keen enough for slicing.
In the course of sharpening, rough sharpening as well as fine sharpening may be done on two
different stones. If the stone is not big enough, you may put the blade against the stone to
form an angle B, as on fig, and sharpening can be done along angle B. when you push the blade
forward then pull it back ward, not only you should turn the blade over, but should move the
blade crosswise, so that the edge as a whole is sharpened.
