Читать книгу The Handyman's Book of Tools, Materials, and Processes Employed in Woodworking - Paul N. Hasluck - Страница 53

A few firmer chisels (Figs. 134 to 136) will be necessary. These are made in various sizes, ranging from about 1/8 in. to 1 1/2 in. in width. As the whole set is not a necessity, a few of convenient size may be purchased, adding to them as occasion requires. The following sizes of chisels will perhaps be found the most serviceable: 1/4 in., 1/2 in., 3/4 in., and 1 in. The firmer chisel is used by both carpenter and joiner for cutting away superfluous wood by thin chips. It is a strong chisel, with an iron back and a steel face (the best are made of cast steel); and it is used with the aid of a mallet. It is more generally used than any other for all kinds of hand chiselling—such as paring, for purposes of fitting, etc. The stouter kinds, being strong enough to resist the blow of a mallet, are also used for broad and shallow mortises. A long paring chisel is shown by Fig. 137. Figs. 138 and 139 show a tool known as a mortise chisel; it is much stronger than the firmer chisel, and is used only for mortising. The oilstone bevel should almost form one with the grindstone bevel as shown; otherwise the resistance offered by the wood to an obtuse oilstone facet not only adds to the labour, but causes the tool to slide away from its work. A lock mortise chisel of great strength is shown by Fig. 140.

Fig. 137.—Long Paring Chisel.

Fig. 138.—Mortise Chisel.