Foster, Edwin W · Boston : Ginn and Company · leaf 51
ry small heads, which allow the nailto be sunk below the surface. This is done by meansof the nail punch, or set, and is necessary when the sur-face is to be planed after the nailing. 26. Screws. Screws are much used, and allow thepieces to be readily taken apart. They are dividedinto two classes,… … 9b A B C Fig. 55. Methods of using Screws Fig. 55 shows a flat-head screw at a and a round-headat h. Flat heads are used for the more common workwhere it is desirable to have the screw head flush (even)with the surface or below it, while round heads are usedwhere this is not necessary. In the…
Woodwork · Trees
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