Woodwork for the grades, for use in manual training classes; fully illustrated with three hundred half-tone engravings from actual shop practice, and many working drawings of educational shop problems (1913)
Selden, Frank Henry · Chicago, Orr & Lockett Hardware Co · leaf 111
108 WOODWORK FOR THE GRADES … and sizes of bits but at present we will consider only the auger bits. There are three important parts at the cutting end of the bit (Fig. 138). The screw Bhelps to place the bit and pullsit into the wood. The spursA A cut across the grain of thewood and the lips CC cut atthe bottom of the hole.…
Woodwork
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
