Dt theory

wood turning on a wood lathe

complex plastic products method

injection moulding

very little detail, for shell

vacuum forming

very tough plastic heat resistant, used for injection moulding

ABS

Only for hollow bottles, polyethlene

Blow moulding

High density polyethylene

HDPE

Waterproof and doesn’t corrode

Stainless steel

die cast with aluminium alloy method for

metal toys

poly vinyl chloride

PVC

Produces the plastic longer in shape

Plastic extrusion

glass reinforced plastic, lightweight and water resistant

GRP

Photochromic

Smart material that responds to light

Thermochromic

Smart material that responds to temperature

Hydrochromic

Smart material that responds to water

High strength to weight ratio, expensive but high quality finish

CFRP - Carbon fibre reinforced plastic

Layers of woven kevlar are combined with layers of resin, resistant to abrasions and has high tensile strength.

Kevlar

Can be shaped and reshaped unlimited times, Changes form at 62 degrees.

Polymorph

Items that will return to original shape after bent.

SMA - Shape memory alloy

measuring circles on metal; centre punch to locate the centre.

divider

Good against heat

Melamine

For bigger materials

Sash clamps

with plastic laminate over it, very cheap.

Chipboard

coping saw

To mark out parallel lines on wood

marking gauge

solid wood board glued together

Flat laminate

hand plane

die casting

manufacture method for metals

mortise and tenon joint

dowel joint

through housing joint

finger joint

rebate joint

biscuit joint

dovetail joint

mitre joint

Purpose of metal finishing

To protect from corrosion and to enhance aesthetics

single cut file

double cut file

curved tooth

rasp file

2 metal finishes

power dip coating, spray paint

irregular metal shapes

angle, channel, hexagonal and octagonal

used on gates, doors

tee hinge

Purpose of grooves

Increases surface area for glue

odd leg calliper