Metals
What are the two types of metals?
ferrous and non-ferrous
what is a word commonly used instead of polymer when describing the material.
plastic
What are the two main categories of wood?
What are the two types of fibres that make most textile products?
natural and synthetic fibres
Name three different types of boards
corrugated board, mounting board, folding box board, foil-lined board, foam core board
What are three common ferrous metals
mild steel, medium carbon steel, cast iron
What two categories of polymers/plastics differentiate them regarding a key characteristic.
thermosetting, thermoforming
You need to create a house and have two different woods to work with, one is larch and one is birch. Which wood will you use to create the structure of the house and which will be used to make the flooring?
Larch (a softwood) is used for the structure, birch (a hardwood) is used for the floor.
What is a fibre and what is a fabric?
fibres are raw, hair-like materials. Fabrics are flexible materials made from stitching/weaving fabrics together.
At what weight are papers generally considered as boards?
220 gsm (grams per square meter)
What are five common non-ferrous metals
aluminium, copper, zinc, tin, lead, gold, silver, platinum, tungsten, titanium
What type of plastic is best used for medical purposes such as digestion and stitching and is also best used for one time use products?
biodegradable, Biopol
What kind of trees to softwoods come from and what are the two key identifying characteristics of these trees?
Conifers. They have needle-like leaves and stay green throughout the entire year.
What are three sources of natural fibres from animals and three sources of natural fibres from plants?
Wool, silk, mohair. Cotton, linen, hemp, jute, sisal, coconut.
Name two common packaging products that use folding box board and two that use sold white board
Folding box board: cereal boxes, retail product packaging, cartons, toys and games packaging,
Solid White Board: book covers, take away food boxes, greeting cards, calendars, gift boxes
What are alloys? give three alloy examples
Two or more elements combined together with at least one being a metal, to get the best characteristics of each. Stainless steel, brass, bronze
Name two common plastics that are recyclable
PETE (Polyethylene Terephthalate), HDPE (High-Density Polyethylene), LDPE (Low-Density Polyethylene), PP (Polypropylene), PVC (Polyvinyl Chloride), PS (Polystyrene)
What is seasoning timber and what two methods are commonly used to season timber?
Seasoning is drying out the timber to remove as much water as possible (below 10% water from 85% water). Air drying and kiln drying are the two common methods of seasoning
name three advantages and disadvantages for natural fibres
Advantages: breathable, water absorbency, comfortable, recyclable, biodegradable, good thermal insulation
Disadvantages: low durability, harder to maintain/care for, more expensive to produce and process
What important properties are considered when choosing what kind of board to use for a product?
flexibility, printability, biodegradability, toughness, aesthetics (form, colour, surface graphics, texture), cost factors (quality, manufacturing processes, recycling costs)
What metal is best used for semi permanent or permanent connection with the human body?
Titanium
What type of plastic is commonly used by designers to quickly create basic prototypes. How is this plastic easily cut?
styrofoam, cut using a hot wire cutter
What is lamination and how is this process done? Give an example of a laminated timber.
Lamination is a strengthening process for timber that involves gluing and compressing layers of material together. Plywood is an example of lamination, as is timber with a veneer covering.
name three advantages and disadvantages for synthetic fibres and name three synthetic fibres
Advantages: durability, moisture/water resistance/dries quickly, cheaper to produce, controllable properties, easier to clean/care for.
Disadvantages: Generally not environmentally friendly, less (or not) breathable/can trap heat and moisture inside, can be highly flammable, can build static electricity
name three different types of paper, what is the largest paper size, A1, B0 or C5
copier paper, tracing paper, cartridge paper, rice paper, bond paper.
B0