While the skew chisel works with great rapidity and does smooth and very satisfactory work in all kinds of ornamental turning, the dimensions obtained with this tool are not so accurate for pattern work as those obtained by the regular pattern maker's scraping tools. These tools, whatever may be the shape of the points or cutting edges, are all flat like the skew chisel, and are ground or beveled on one side only. Indeed there is no better wide scraping tool for large surfaces than a common firmer chisel after it has been worn short so as to be free from vibration.
Fig. 93. Scraping Tools.
Fig. 94. Cutting-Off Tool.
Fig. 95. Two Views of Circular-Saw Bench.
Scraping tools are made in many forms and shapes, and are ground by the workman to suit the requirements of his work. A few of the many shapes in common use are illustrated in Fig. 93.
These tools should be ground with a very short bevel, and must be sharpened much oftener than a cutting tool. The revolving wood, passing at right angles to the sharp edge, wears it away more quickly than it can a cutting tool, for the latter is also worn away on the slanting side of the bevel.
A very necessary tool for all kinds of wood turning is the parting or cutting-off tool, shown in Fig. 94. This is used as a scraping tool for cutting recesses in the work and for cutting off finished work from the faceplate, and will also be found useful for many other purposes.