Materials (Snr)

What is the single biggest issue when using steel?

• Corrosion

• Aesthetics

• Rot

• High cost

How do we protect steel from corrosion? (multiple answers)

• Galvanize it

• Paint it

• Insulate it

• Weld it

I want to make a complex extrusion to use indoors/outdoors, what material do you suggest?

• plastic

• steel

• aluminium

• stainless steel

Name two of the coloured finishes available for aluminium

• powdercoating

• anodising

• oiling

• staining

I am designing a new range of cutlery, what grade/s of stainless steel do you recommend?

• 304 grade

• 18/8 grade

• 316 grade

• 403 grade

I have been asked to design a handrail for a wharf. I have recommended stainless steel. The client says it will cost too much. What reason should I give to best support my claim?

• Low maintenance & long life of the product will pay off

• It will look the best

• It can be made into more interesting shapes than other materials

• Timber is not stylish enough

What 2 plastics are the most common in hobby grade 3D printers?

• ABS - Acrylonitrile Butadiene Styrene

• PLA - polylactic acid

• PVC - polyvinyl chloride

• PET - polyethylene terephthalate

What is the most commonly used plastic in the world today?

• PET - polyethylene terephthalate

• Nylon

• Polystyrene

• Polypropylene

Identify the qualities of THERMOSET plastics

• Cannot be reshaped

• Cannot be recycled

• Are normally moulded

• Are always clear

Select the common characteristics of THERMOPLASTICS

• Soften when heated

• Can be reshaped when heated

• Are generally soft & flexible

• Can usually be recycled

• Are always white in colour