Oilstone

Of the edge, and, at the same time, the pressure on the stone should be increased. This procedure will break off the feather edge, and the stoning is then continued in the normal manner. As the sharpening process nears completion, the pressure applied to the blade should be reduced. For cutting leather and similar materials, the slightly rough edge produced by a carborundum stone will be found to give satisfactory results, but where a fine smooth edge is required on a very hard blade, such as a...

Tension Screw

In this device then causes the carriage, against which the blade rests, to advance towards or to retire from the throat of the plane, carrying the cutting iron with it. Serrations formed on the face of the carriage and on the under-side of the blade ensure that any movement of the iron does not take place, once the tension screw has been tightened. Other types of planes furnished with this form of single cutting iron are the Rabbet, the Fillister, the Dado, and the Grooving plane, as well as...

Holder

Thicknesses are to be ground by the latter method, on wheels of two different diameters, six sets of templates will be required to meet all eventualities. Moreover, when a large grinding wheel of say 12-in. diam. is employed, the curvatures formed on the faces of the tool will be nearly linear, but with a small wheel of only 3 or 4 in. diam., the concavities ground may seriously undermine and weaken the extreme cutting edges of the tool. It should be emphasised that the grinding operation will...