Woodwork Joints | Page 6

cross rails and an upright halved together. This type of joint is used where three pieces meet, as is the case in building the framing of a poultry house. The joint is nailed together.
[Illustration: Fig. 57.--Cross Rail and Upright Halved Joint.]
[Illustration: Fig. 58.--Workshop Trestle Joint.]
[Illustration: Fig. 59.--Cellarette Partition Joints.]
Fig. 58 is the end view of an ordinary workshop trestle, showing the application of dovetailed halving where the legs have a tendency to strain outwards. The inset sketch of joint shows the housing of the top rail to receive the legs.
Fig. 59 shows a deep drawer, generally known as a cellarette, and used in a sideboard to accommodate wine bottles. Here we have a good example of halving the cross pieces so as to form compartments. The part shown separately illustrates the method of construction. The ends of these pieces engage the housings or grooves of the drawer sides. Pigeon holes or compartments in stationery cases, bookcases and writing bureaux are constructed in a similar manner, although the method of housing, or combined halving and housing, is to be preferred in some cases.
[Illustration: Fig. 60.--Joint used for Table with Circular Top or Rim.]
At Fig. 60 is the plan of a circular table having a small circular shelf with the top removed. The rims or framing are built by the method known as laminating (see Fig. 23 in chapter on the The Glued Joint), after which they are veneered on the face sides. The application of the halving joint to the shaped bottom rails, which in this case carry and support the small shelf, is shown in the part elevation.
[Illustration: Fig. 61 (A).--Oxford Frame with Halved Joints. (Four alternative corner treatments are given.)]
[Illustration: Fig. 61 (B).--Halved Joint of Oxford Frame with front edges champered.]
[Illustration: Fig. 61 (C).--Back view of Oxford Frame.]
Fig. 61 (A) shows the well-known "Oxford frame," illustrating halved joints when the edge is rebated. Figs. 61 (B) and 61 (C) make clear the construction of this type of joint. Alternative suggestions are shown for the treatment of the corners, the simple inlay being black and white (ebony and holly or boxwood). Frames of this type are made in various widths and sizes and are used for pictures, mirrors, etc.
[Illustration: Fig. 62.--The Two Pieces of a Halved Joint.]
The tools used for making joints of the above class are: planes, the gauge, tenon or other saw, chisels, try square, and in some cases a joiner's bevel to obtain and mark the necessary angles, pencil and marking knife.
Plane up the face side and face edge of the timber, gauge and plane to both thickness and width; mark shoulders with pencil or marking knife; gauge to the thickness of the required halving; saw waste portions away; pare up with chisel to a good fit; glue or glue and screw, or use paint as previously mentioned, and then level off the surfaces.
SETTING OUT THE HALVED JOINT.--Although at first sight the halved joint may appear to be a very easy item of construction, it requires much care and attention in marking out and sawing. Fig. 62 shows the two pieces which form the joint separated, and it will be noticed that each piece of wood has half its thickness cut away, so as to accommodate the other piece. This type of joint is used where two pieces of wood cross each other at right angles, or at an angle as shown in Fig. 51. The halving joint is used also for joining two pieces of wood at their ends, as, for instance, the corner of a frame, one half of this joint being shown at Fig. 65 (B).
[Illustration: Fig. 63.--How the Timber is Marked.]
[Illustration: Fig. 64.--Marking the Joint with Try Square.]
To make the joint, the timber should be carefully planed to its exact width and thickness. The two pieces may then be placed upon the bench (as shown at Fig. 63) or fixed in the vice.
Find the centre of the timber, C, Fig. 63, and set out half the width of the wood on each side of the dotted centre line. Thus, suppose the wood (W) to be 2 ins. wide, then set 1 in. on each side of the centre line. Take a square as at Fig. 64, and with a sharp penknife blade score or cut a line all round each piece of timber.
[Illustration: Fig. 65.--Using the Marking Gauge.]
Next take up a marking gauge, and set the marking point to half the thickness of the wood. The distance may be measured, and its exactness tested, by pricking a small hole from each side of the wood with the marking gauge and carefully noting that the pricked holes coincide. The gauge mark is clearly shown in the various illustrations. Now, take a pencil and scribble or mark "waste" on the parts you intend to cut