Woodworking for beginners; a manual for amateurs . Fig. 691. Withdrawing Nails.—When withdrawing nails place a blockunder the hammer-head as shown (Fig. 692), using more blocks,if necessary, as the nail is withdrawn. To draw the nails from boxes, pry up a board, together withthe nails, a short distance—perhaps ^—and then with a sharpsquick blow of the hammer pound the board back into place, notstriking the nails but the board between them. This will usuallyleave the nail-heads projecting a little above the surface, sothat you can draw them as shown in Fig. 692, and thus savesplitting or defaci
Woodworking for beginners; a manual for amateurs . Fig. 691. Withdrawing Nails.—When withdrawing nails place a blockunder the hammer-head as shown (Fig. 692), using more blocks,if necessary, as the nail is withdrawn. To draw the nails from boxes, pry up a board, together withthe nails, a short distance—perhaps ^—and then with a sharpsquick blow of the hammer pound the board back into place, notstriking the nails but the board between them. This will usuallyleave the nail-heads projecting a little above the surface, sothat you can draw them as shown in Fig. 692, and thus savesplitting or defacing the boards and bending the nails, as usuallyresults from smashing or wrenching boxes apart. The quickblow drives the board back before the motion has time to com-municate itself to the nails, on somewhat the same principle that Tools and Operations 505 a bullet makes a round hole in a window pane without smashingthe Fig. 692. Wood-Filler.—See Finishing. Wrench.—A strong wrench is often very serviceable in wood-working operations. APPENDIX Collection of Specimens of Wood.—Waste pieces of allthe common woods can easily be obtained at the wood workingshops. Have some system about the size and shape of thespecimens. Some kinds you may be able to get only in piecesof such shape as you can find among the odds and ends of theshops, and many rare foreign and tropical woods you can obtainonly in quite small pieces, but even these will show the characterof the wood and add value to the collection. Waste scraps ofveneers of rare woods can be glued on blocks of pine. The specimens will be most valuable if you can get them outso as to show a longitudinal section along the medullary rays (orthrough the heart), a longitudinal section at rightangles to the medullary rays (or tangential tothe annual rings), and a cross section (Fig. 693).It will be an advantage also to show not only theheartwood but the sap
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