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WOODWORK JOINTS Grd 8

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WOODWORK JOINTS
There are different types of joints used in woodwork projects.
They are:
1. Butt joint: the square end of a member fits against the edge
of the other member. It is the simplest type of wood joint but not
as strong as other types. The two main types of butt joint are the
plain butt joint and rebated butt joint.
2. Halving joint: the pieces of wood to be joined are cut into
half through their thickness so as to flush on the assembled
faces. Types of halving joint are corner halving joint, cross halving
joint and tee halving joint.
3. Bridle joint: this is a simple form of a mortise and tenon
joint and is used where a stronger joint than halving joint is
required.
4. A dovetail joint is a joinery technique commonly used in woodwork
projects. It has resistance to being pulled apart. A series of pins cut to
extend from the end of one board interlock with a series of tails cut into
the end of another board. Once glued, a wooden dovetail joint requires
no mechanical fasteners.
5. Tongue and groove is a method of fitting pieces of wood
together, edge to edge, used in flooring for example. Tongue and
groove joints allow two flat pieces to be joined strongly together
to make a single flat surface.
6. A mortise and tenon joint is one in which the rectangular
end (the tenon) of one piece fits into a rectangular hole (the
mortise) of the same size, in the other piece. Mortise and tenon
joints are strong and neat in appearance.
CLASSES OF WOODWORK JOINTS
1. Widening Joints: for joining an edge to another edge to
produce wider boards, e.g. tongue and groove joint, halving
joint.
2. Angle or Box Joints: for joining wood pieces fixed to form a
light angle, e.g. butt joint, dovetail joint.
3. Framing Joints: used for frame construction e.g. mortise and
tenon joint, bridle joint, butt joint, halving joint.
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