17 - Wood processes Flashcards
What are the three types of wood processes?
~ Addition
~ Forming
~ Wasting
What are the 2 types of addition wood processes?
- Traditional wood joints
- Component joining
Name 4 traditional wood joints and their uses
- Dovetail joint: Used for drawers due to multi-directional strength
- Finger joint: Used for box construction
- Housing joint: Used for framework, cabinets and shelves
- Dowel joint: Used in flat-pack furniture
Name 3 component joining processes
- Knock-down fittings
- Wood screw
- Coach bolts
Knock-down fittings
Used to manufacture flat-pack furniture.
- Easy to use with simple tools - standardised fittings
- E.G a modesty block; small polymer blocks with holes for screws to go in to
Wood screws
Threadest fastener used to join 2 pieces of wood
-Pilot hole must be drilled first so that the thread can bite in to the wood
- Clearance hole must bedrilled on the surface so that the screw head can push in to the wood
Coach bolt
Used to join 2 pieces of wood
- Has a square piece underneath the head of the bolt, which digs in to the wood and prevents the bolt from rotating
- Used for street furniture and fitting door locks
Name 2 wood forming processes
- Lamination
- Steam bending
Lamination
Veneers or manufactured board are glued together
- Bent over a former so that they dry in the desired shape
- Held while drying with clamps or a vacuum bag
Steam bending
Heat and steam applied to strips of wood, making them pliable so they can be bent over a former
- Wood placed in a steam box, where it will absorb steam
- Wood is then bent over a former and clamped in place until it dries
Name 3 wood wasting processes
- Turning
- Milling
-Routering
Turning
- Uses a lathe to spin the wood
- Lathe tools then used to remove waste regions
What are the three types of ‘turning’?
- Turning between centres: Used to machine a ‘spindle’ such as a chair leg
- Turning on a faceplate: Used to machine items such as domes or bowls. (wood held on one side)
- Turning in a chuck: Used to grip the item while it is machines, E.G holding the base of a small bowl to allow access to the inside surface
Milling
- Rotary cutters which are held on all axis, allowing them to move anywehre on the designated surface of the wood
- Slower and more limited than routering
- Can be operated manually or Computer Numerically Controlled (CNC)
Routering
Used to machine slots and holes in wood, or to make decerative patterns around the edge of the wood.
- Rotary cutters move around large pieces of wood, wasting (cutting off) desired regions
- Can be human operated or CNC