A treatise on architecture and building construction . and a piece of ash, clamp them upwith a hand screw, and when they are dry insert a chisel inthe joint and try to pry them apart. If the joint separateswhere it is glued, the adhesion is inferior, and should not beused for first-class work. The wood should split or giveway rather than the material securing the joint. 6. The simplest joint made use of in joinery is the buttjoint, shown in Fig. 1. Here the two pieces joined aresimply butted together, in a similar manner to the buttjoint in carpentry, but the adjacent surfaces are much moreacc
A treatise on architecture and building construction . and a piece of ash, clamp them upwith a hand screw, and when they are dry insert a chisel inthe joint and try to pry them apart. If the joint separateswhere it is glued, the adhesion is inferior, and should not beused for first-class work. The wood should split or giveway rather than the material securing the joint. 6. The simplest joint made use of in joinery is the buttjoint, shown in Fig. 1. Here the two pieces joined aresimply butted together, in a similar manner to the buttjoint in carpentry, but the adjacent surfaces are much moreaccurately fitted, and are held in place by means of screwsor dowels—the former when the pieces joined arc broad and JOINERY. 10 thin, as in Fig. 1 (a), and the latter when the timbers areheavy and thick, or when they are joined together on thethinner edges, as at Fig. 1 (/^). This joint is insecure in itself, and iisually requires glueto make it in any degree reliable; or it may be kept in placeby the woodwork behind, against which it is erected, as. Fig. 1. would be the case in an exterior casing for a window wherethe form shown at (d), Fig. 1, would be used, except thatthe top /i would rest iipon the sides/. The plain butt joint, shown at Fig. 1 (a), is seldom usedin first-class joiners work, as the opening caused by shrink-age is very apparent. The absence of a device to keep theentire surface flush allows the fibers to curl, and the effectof shrinkage and warping would be to cause the pieces cin Fig. 1 (a) to project slightly over the side of d and renderthe juncture too apparent. This may be obviated to acertain extent when the grain runs parallel to the joint, byforming the joint as at (c); a quarter-round / is worked onone of the pieces to be joined, thus forming fillets, as shownat i^. The joint. Fig. 1 {a), may also be doweled, as shownat Fig. 1 {d). §10 JOINERY.
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Keywords: ., bo, bookcentury1800, booksubjectarchitecture, booksubjectbuilding
