Resistant Materials - Wood joints

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  • Joints
    • Simple joints
      • Butt joint
        • Simple but weak: Can be cut at 45 degrees (mitred): Is often used in picture frames.
      • Halving joint
        • Comes in several variations: Is used to make a frame: Has half the material removed from each piece using a saw and chisel: Can be strenghthened with a dowel through the joint.
      • Dowel joint
        • Is very easy to produce: Uses alinged holes and dowels (pegs). Some commercial products use serrated platic dowels for home assemply: Is used in frame and carcase joints for chair legs and cupboard corners: Is drilled using a jig to ensure accuracy.
      • Lap joint
        • Stronger than a butt joint because it has a bigger surface area for glue: Often strengthened by nails: Used in frame and carcase joints.
      • Housing joint
        • Has a slot cut into one piece (To make a support for a cupboard shelf and to increase gluing area): Is often made with an electrically- powered router.
    • Complicated joints
      • Mortise and Tenon joint
        • A strong joint: Used in frame joints for chair and table legs.
      • Dovetail joint
        • The strongest joint for box constructions in natural wood: Used in carcase joints for cupboard corners and drawer constructions (the tapered tails don't pull apart).
    • Temporary joints
      • Nails or Nailed joints
        • Holding wood together while the glue dries: Fixing the backs of cupboards: Decorative mouldings: General building and DIY work.
      • Screws
        • These can be very strong when used across the grain: There are different types of screws, but cross head screwa are increasingly used instead of slot heads because they're electrically powered driver: Can be used to temporarilly join together materials such as wood, metals, and platics.
    • Permanent joints
      • Biscuit joints
        • Used to join two bits of material at right angles (e.g. Table legs to the table surface, cupboard top to cupboard side, etc.): Can also be used to join two bits of materials side by side to make a wider board.


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