1.17 Wood processes

Question 1

State the three types of traditional wood joining

Answer 1

Dovetail joint
* used for drawers due to multi-directional strength
Comb (finger) joint
* used for box construction
Housing joint
* used for framework construction, cabinets, and shelving
Half lap joint
* used for simple frames or boxes
Dowel joint
* used for flat-pack furniture
Mortise and tenon joint
* used for frame constructions for tables, chair
Butt joint
Used for modelling
MItre Joint
Picture frames

Question 2

Define knock-down (KD) fitting

Answer 2

KD fittings are a wide range of standardised, interchangeable fittings that is used on a wide range of products.

Question 3

State two knock-down (KD) fittings

Answer 3

Modesty block
* small, rigid polymer blocks. They have moulded holes that take screws
that are used to join blocks to panels and could be used on cupboards
and storage units
Barrel nuts and bolts
* uses a cross-dowel that is fitted into one of the pieces to be joined. The
bolt is inserted through the other piece of timber and tightened into the
cross-dowel (often using an Allen key). They are often used in bed frames
Cam-lock connector
* consist of a metal dowel that is screwed into one of the pieces. The cam
is a disk that fits into a pre-drilled hole. When the disk is rotated with a
screwdriver, the collar on the dowel locks into the cam and pulls both
pieces tightly together. They are used in flat-pack furniture such as
bookcases, where the horizontal shelves are attached to the sides
4) Wood screws
- are used for screwing two pieces of wood together where the thread is
needed only at the bottom. When joining two pieces of wood together,
the top part is drilled with a clearance hole that the screw simply pushes
through. The bottom piece of wood has a pilot hole (thinner than the
thread) so that the thread bites into the timber
5) Coach bolts
- are used to join wood pieces together. Under the domed head of the
bolt is a square piece that digs into the wood when tightened, preventing
the bolt from rotating. They are used for fitting door locks

Question 4

Define lamination

Answer 4

Uses wood veneers or thin manufacture boards such as 3mm plywood, which can be glued together and bent over a former so that, when dry, they from a thinker board in the shape of the form

Question 5

Define steam bending

Answer 5

Uses heat and steam to make strips of wood pliable so they can be shaped over a former

Question 6

Define turning

Answer 6

Machining wood on a lathe; methods includes turning between centres, turning on a faceplate and turning in a chuck

Question 7

Define milling wood

Answer 7

A slow process used for small and basic jobs

Question 8

Define routering

Answer 8

Manual plunge or CNC used to machine slots and holes or make decorative ‘mouldings’