WOOD JOINTS

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WOOD JOINTS

• Items to consider when choosing a wood joint.
• How will the joint be used?
• How durable does it need to be?
• What appearance does it have to have?
• How many joints need to be made?
• What special tools are needed to make and clamp
  the joint?

• Stronger Joints involve surfaces and
• edges of stock.
• Weaker Joints involve the end grain of
• stock

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Types of Wood Joints
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Butt Joints

• Butt joints are not strong joints.
• They are easy to prepare assemble.

End Butt joints attaches a square End of one
piece of stock to the Surface or edge of another
piece Of stock. (not very strong)
Edge Butt joints fastens 2 or More pieces of
stock edge to Edge. Used for laminations For
table tops etc.
Edge Butt joints longer than Two feet require
reinforcement With dowels or biscuits
for Strength.
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Miter Joints are used to Make corners for
frames or installing moldings. (very weak joints
without reinforcement)
Lap joints are used for supporting items such as
a table top. Are very strong joints
Lap Joints are made by reducing each piece of
stock to half its original thickness.
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Rabbet Joints
A Rabbet is an L-shaped recess cut at the end or
along the edge of the stock.
Rabbet joints are often used for making sides of
boxes or drawers.
Rabbet joints are strong joints and
are relatively easy to make.
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Dado Joints

• A dado is a square cornered recess that runs
  across the grain.
• Similar to a rabbet but is not located at the
  edge of the stock.
• Commonly used to hold shelves in cabinets or for
  drawer slides.
• Groove joint is like a dado except it runs along
  the grain, not against it.

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Mortise Tenon Joints
Tenon
Mortise

• Used in furniture construction.
• Very strong joint when properly made.
• Mortise is rectangular recess.
• Tenon is rectangular projection.
• Two types of mortise tenon joints blind
  through.
• Difficult to make by hand.
• Several methods can be used to create this joint
  using doweling jigs, routers or mortising
  attachment on a drill press.

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Dovetail Joints

• Primarily used in
• drawer construction.

• Used in high quality
• furniture.

Wedge shaped fingers interlock.

• Joint consists of wedge-shaped projections that
  fit into matching recesses.
• Difficult to make by hand.
• Dovetail fixtures used with a router make for an
  easier job.

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Plate or Biscuit Joints

• Becoming one of the most popular methods of
  making joints for all types of products.
• Biscuit is a flat football shaped piece of beech
  which fits into a semicircular slot cut by a
  biscuit or plate joiner.
• When glued together, biscuit swells tightens
  the joint.

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Box Joints
Rectangular fingers

• Box joints are similar to dovetail joints but are
  quite as strong.
• Projections are rectangular in shape instead of
  wedged shaped as in the dovetail joint.
• Difficult to make by hand but easy to make with
  fixtures on the table saw or the router.