Woodwork for the grades for use in manual training classes (1912)
Selden, Frank Henry · Valley City, N.D., The Maudslay press · leaf 110
Fig. 137—Bit-brace … 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…
Woodwork (Manual training)
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