. Elementary woodworking . Fig. 47. The Screw-])river It must always be kept in mind that a surface whichhas been sandpapered has become gritty, the finesand has come off and is more or less imbedded in thewood. Consequently sandpapering must not be doneuntil all tool work has been finished, as the grit willtake the edge off the best tool,and the finer the edge the morequickly will it be ruined. Again, a sandpapered surfaceis always a scratched surface,and the finest of scratched sur-faces cannot compare with theperfectly smooth, satiny sur-face produced by a sharp , there ar
. Elementary woodworking . Fig. 47. The Screw-])river It must always be kept in mind that a surface whichhas been sandpapered has become gritty, the finesand has come off and is more or less imbedded in thewood. Consequently sandpapering must not be doneuntil all tool work has been finished, as the grit willtake the edge off the best tool,and the finer the edge the morequickly will it be ruined. Again, a sandpapered surfaceis always a scratched surface,and the finest of scratched sur-faces cannot compare with theperfectly smooth, satiny sur-face produced by a sharp , there are many places / / / \ \—^ where neither the plane norspokeshave can be used, and ^^^\, x.^ xeicisemvo vmg i the Use of Sandpaper here it is allowable to use sand-paper after the tool work has been carried as far 36 ELEMENTARY WOOUWOKKING Fig. 48 is a case where sandpaper may be used withpropriety. The bevels in this lesson are to be chiseledand then sandpapered with a sandpaper block, — theblock in this case being simply a small piece of woodwith square edges, about which the sandpaper is fastenedclosely. Curved articles, such as the hammer handle, must dis-pense with the block, the sandpaper being held in thehand. 22. Squaring up Stock. This term simply means toreduce a piece of sawed or rough lumber to one havingsmooth, flat sides at right angles to each other, and ofdefinite length, breadth, and thickness (see Fig. 49). First. Straighten one face with fore plane, jack plane, or jointer,and smooth with smoothing phxne. This face, called theworking face, becomes the basis from which all the othersides are squared. Second. Plane one of the adjoining edges and make square withthe working face. This edge, known as the joint edge, mustbe thoroughly tested throughout its entire length with thet
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