more Woodwork Joints
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| u and v. Scarf or spliced joints.
For extending the length of a member. Used more in
carpentry than cabinet work but has it uses for jointing
thin wood sections especially in hooped work, banding or
other laminated work. 'v' is the stronger
joint because it has a greater glue area |
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| w. A wooden batten sometimes called
a 'clamp' or 'cleat' to
reinforce a jointed board. Used extensively in joinery
especially Ledged and braced doors. Drawing boards are
reinforced similar. The screw holes are countersunk and
elongated to allow for shrinkage. |
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Edge jointing boards.
Care should
be take to ensure that the boards are prepared square, flat and
free from wind. The edges are 'shot' with a jointer plane with
the boards together to ensure that any bevel
matches. If both boards are 'dropped' keeping
the meeting edges together this will get it right. Note
grain direction for tangential or radial boards. (see below)
x. plain 'rubbed joint'
y. Reinforced with dowels.
z. Reinforced with 'biscuits' ~ Note the marking out.
zz. Reinforced with a ply strip.
Mahogany, walnut and the 'better kind' of pines hold glue well
and may be fine to have just a rubbed joint. Oak, rosewood and
other 'resinous' woods need reinforcement as above.
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| Note grain direction for tangential or
radial boards.
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| Tenoned and Mitred Clamp ~ this
joint was used for large table tops and bureau falls
before good quality ply wood, veneered mdf, etc. became
more readily available. It is still an excellent way
of applying a border for finishing natural or manufactured
boards. The clamp stiffens and helps to reduce the
cupping effect of tangentially edge jointed
boards. The side edging pieces or moulds are
fixed into place first (aligned with help of the
clamp) and is strengthened with a loose ply
tongue. Use of the modern Biscuit Joints would have
a similar effect. I believe that in North
America it is called a 'breadboard' joint. |
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text and grafics ©
G.E. Malthouse ~ all rights reserved
reference
sources: Furniture Making - E Joyce, Purpose Made Joinery - P
Brett - Collins Woodworking Manual - Carpentry &
Joinery, Porter & Rose - Woodwork Joints, Charles H Hayward |
