Fig. 32.
Move the tool gradually from one side of the stone to the other. See that there is plenty of water on the stone. The tool should be held during the operation so that it revolves toward the person grinding. The tool thus held is not so liable to have a “wire edge” as it is if held on the stone while it is revolving away from the operator.
Fig. 33.
The “whetted” edge should never be ground away unless the plane-iron is in very poor condition.
The grinding is complete when the bevel reaches the cutting edge,—a condition which can readily be determined by holding the finger along the flat side of the iron and having the light fall in the proper direction; a thin bright line will be seen which will determine whether the iron is ground enough. The plane-iron is shown before it is ground in [Fig. 34], and [Fig. 35] shows it after it is ground.
Fig. 34.
