Transcript WOOD Joints - OHS Technology

Woodworking Joints
Joinery
• Joinery is the part of Woodworking
that involves joining pieces of wood
together
• Some require fasteners, adhesives
Types of Wood Joints
Butt Joint
• The simple butt joint is most
commonly used.
• This joint is formed by nailing or
screwing the end of one piece of
wood to the end of the other.
• While this is simple, fast and
effective, the butt joint leaves
the heads of the screws or nails
exposed.
• Used in cabinet making or
Construction framing
Types of Wood Joints
Dowel Joint
• The dowel joint is basically the
same as the butt joint except
dowels are used to hold the two
pieces of wood together instead
of screws and nails
• Construct blind dowel joints by
drilling the holes only partway
into each piece of wood. Then
drive the dowels into these
holes and glue them into
position.
• The dowels are not always
visible.
Types of Wood Joints
Lap Joint
• The Lap Joint is made by
sawing halfway through
each piece of wood
• The Lap Joint provides a
great deal of strength,
but the heads of the
nails, screws are still
exposed.
• Used in Cabinet making
Types of Wood Joints
Mortise & Tenon
• This Wood Joint is simple and
strong. Due to this, it is commonly
used with other materials besides
wood.
• To form this joint, saw a slot into
one piece of wood. The end of the
other piece of wood is then
notched out to fit the slot in the
first piece.
• The wood joint is then glued
together.
• Used in furniture making
Types of Wood Joints
Mitre Joint
• The conventional mitre joint
is widely used for making
corners in various types of
woodwork
• This Wood Joint is a finish
joint and not a strong joint.
Therefore it is not
recommended where the
joint is subject to excessive
weight or unusual strain.
Types of Wood Joints
Rabbet Joint
• A simple wood joint, in which the
ends of boards are joined at right
angles by removing a portion of
one board’s thickness to
accommodate another board.
• In addition to increasing the glue
surface, the rabbet also provides
support and alignment for the
two pieces.
• Used for small scale structural
applications: small boxes, wall
cabinets, etc.
Types of Wood Joints
Dado Joint
• To make a Dado Joint, cut a slot
into one piece of wood to
match the end of the other.
• The dado joint is much stronger
than the butt joint and creates
a more professional
appearance.
• It can be used horizontally to
support shelves on a bookcase
or vertically to hold partitions.
Types of Wood Joints
Dovetail Joint
• This wood joint is noted for its
resistance to being pulled apart
(tensile strength).
• The dovetail joint is commonly
used to join the sides of a drawer
to the front.
• A series of pins cut into one
board and tails into the second
board form the joint.
• Once glued, a wooden dovetail
joint requires no mechanical
fasteners.
Summary of Wood Joints
Name:
Strength:
Butt Joint
Simple/Fast
Weakness: Fasteners are shown
Name:
Name:
Strength: Strength of Joint
Weakness: Setup time to create
Weakness: Fasteners are shown
Rabbet Joint
Name:
Wood
Joints
Weakness: End grain exposed
Mortise & Tenon
Name: Lap Joint
Strength: Fasteners can be hidden
Strength: Simple/Provides support
Name:
Dowel Joint
Name:
Dado Joint
Strength:
Mitre Joint
Decorative Joint
Weakness: No strength to joint
Name:
Dovetail Joint
Strength: Strength/Appearance
Strength: Strength/Professional
Strength:
Strength
Weakness: Setup time to create
Weakness: Setup time to create
Weakness: Setup time to create
WOOD Joints
Careful planning, measuring and cutting result in
attractive functional wood joints.