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Halving removes half the timber thickness to yield flush surface joints.

Halved joints join two pieces of timber by cutting away half the material thickness of each member at the intersection. Marking out requires a striking knife and a marking gauge set to exactly half the timber depth. Cutting the shoulder with a tenon saw and paring the socket flat with a chisel creates a flush face across both pieces. Cross-halving, tee-halving, and bevelled halving form the structural foundation of framing, screen rails, and simple plinths.

Angled shoulders prevent timber members from pulling apart under tension.

Dovetail halving improves upon standard halving by tapering the socket and pin at a bevelled angle. The wedge shape locks the cross rail into the main timber, resisting tension forces that would pull a straight halved joint out of alignment. Laying out the pin first allows its shape to be scribed directly onto the receiving piece with a sharp awl. This joint secures framing ties, drawer runners, and stretcher rails where lateral pulling stress occurs.

Pinning a rectangular tenon inside a matching mortise optimizes frame strength.

The mortise and tenon joint connects uprights to horizontal rails by fitting a rectangular tongue into a cut cavity. Precision depends on selecting a mortise chisel that matches one-third of the timber's thickness. Scribing shoulders cleanly ensures the rail sits flat against the upright, while draw-boring with a wooden dowel pulls the joint tight without relying solely on glue. Door frames, table aprons, and window sashes rely on this joint to bear heavy loads.

Open mortises allow corner framing to withstand multidirectional wracking forces.

The bridle joint acts as an inverted mortise and tenon, featuring an open socket on the end of one piece and a central tongue on the other. Cutting the cheeks with a frame saw leaves a sturdy three-part corner joint with extensive gluing surface. The open layout makes the joint visible from two edges, demanding square shoulders and exact gauge lines. Cabinet frames, mirror frames, and leg stretchers utilize bridle joints for rigidity against twisting.

Interlocking pins and tails distribute mechanical resistance across corner joints.

Through-dovetails join cabinet corners by interlocking wedge-shaped tails with matching pins cut across end grain. Standard pitch ratios of one in six for hardwood and one in five for softwood provide maximum resistance to joint separation. Marking tails first with a bevel marker ensures consistent angles across the corner face. Drawers, carcass sides, and chest corners utilize through-dovetails for high tensile strength and decorative end-grain contrast.

Concealing end grain at angled corners preserves continuous surface molding lines.

Mitred joints bisect a right angle into two forty-five degree faces to join moldings without exposing unsightly end grain. Sawing inside a dedicated miter block or shooting board yields matching miter faces that sit seamless when brought together. Internal tongues, slip feathers, or corrugated fasteners reinforce the joint against movement caused by humidity changes. Architraves, picture frames, and cabinet cornices employ miters to maintain unbroken decorative profiles.

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Woodwork Joints

Master the essential principles, setting out methods, and practical applications of traditional woodworking joints.

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