Please enable JavaScript.
Coggle requires JavaScript to display documents.
SOLE lesson T3 Commercial manufacturing - Coggle Diagram
SOLE lesson T3 Commercial manufacturing
How are timbers and boards selected and processed for commercial products?
tree cut down, stacked in log pile, put on lorry and taken to factory, there it is cut into board shape, then it is seasoned to remove water
How are materials cut, shaped and formed
to a tolerance?
it first does a rough cut then it does another more accurate cut
how and why are surface treatments and finishes applied to wooden products
Wood stain is applied so that the appearance of the timber is enhanced. It is possible to buy many different wood stains that are designed to look like a different wood type. Often, pine is stained to look like a darker hardwood - hardwood is expensive, so staining a piece of cheaper timber is often a good alternative. Wood stain gives some protection to the timber, but an additional coat of varnish after staining is often a good idea.
Paint gives colour to the timber and can protect the timber if it is going to go outside. Some paint can be applied with a paintbrush or roller; some needs an undercoat so that the timber is sealed before the paint is applied. Most paints will have instructions on the tin to suggest the best method of application, and these will also give details of drying times and necessary health and safety precautions.
Varnish can be applied to timber so that a shiny appearance is achieved. Varnish is usually applied in many layers so that the thickness of the varnish is more durable. Varnish can be glossy or matt depending on the type used.
Pressure-treated timber is placed inside a pressurised treatment vessel so that the protective fluid can penetrate the timber. This process extends the lifespan of wood, protecting it against rot. This is beneficial as it is often bought for outdoor use, generally by the building trade or gardeners. Decking and garden fences are often made from pressure-treated timber, and there is no need to paint, stain, varnish or coat the timber in any other way.
three disadvantages of man made board
can crack or split under extreme stress
absorbs water quicker than wood
comparatively weaker than wood
What properties of manufactured board
make it suitable for flat-pack products
smooth and strong
good dimensional stability
less likely to warp and twist out of shape
What are the factors that drive designers to choose specific materials
advantages
disadvantages
price
What is CNC machinery