The Technique of FURNITURE MAKING
SCRIBED WORK
Scribing or shaping one piece to fit over another, as in a moulded and rebated/rabbeted framework (168:17), is an alternative to mitring and gives the same overall appearance; also, any shrinkage is disguised and will not show as an open gap (X) visible in mitred work. Scribes are, however, more difficult to cut and their application more limited, for external angles (172:2) cannot be scribed, nor can undercut mouldings (172:4). The inner angle (172:2) and the moulding (172:3) can be scribed.
Cutting scribes
The mortised piece is rebated/rabbeted, shaped and cut back in the normal manner (168: 17B), but the moulding is not mitre cut. The tenoned piece (168:17A) is also moulded and rebated and the moulding mitred; it is then pared away exactly on the mitre-line with a suitable scribing (incannelled) gouge so that it fits exactly over the other. When assembled the general appearance will be that of an accurately fitted mitre, except for the small offset at the base of the moulding where the cut will be square.
The general term 'scribe' also means to mark
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76mm 3IN ___ 1 IN 8 |
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4 |
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TABLED JOINT |
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HOOKED SPLICE 173 Scarf (spliced) joints |
LONG SPLICE (PLYWOOD ETC )
or score in order to indicate the exact outline which must be followed when fitting to an uneven surface or another irregular outline. Methods of scribing are described in Chapter 36, Setting out and Cutting Lists.
SCARF JOINTS
Alternatively known as splicing, these joints are used to extend the length of boards and are more applicable to carpentry, although they have applications in furniture repair-work. Figure 173:1 shows the simple half lap splice, 173:2 the bevel halving splice, 173:3 the tabled joint, and 173:4 the hooked splice. Figure 173:2 and 3 will resist end pull and to some extent a side swivel, while in 173:4 less stock is taken away at the root (X) and the joint is correspondingly stronger. Simple scarfing or splicing (173:5) relies on the glue only and, provided the joint is long enough, with from eight to 10 times the thickness in thin plywoods, the union can be as strong as a single length. Solid boards are usually scarfed at nine times the thickness, but some woods will hold at lesser angles.
