materials Flashcards
List 4 types of man-made woods?
- medium-density fibreboard (MDF)
- chipboard
- plywood
- hardboard
What are the properties of MDF?
- Has a smooth, even surface
- Easily machined and painted
- Available in water and fire resistant form
- Often veneered or painted to improve its appearance
What are the uses for MDF?
furniture and interior panelling
What are the properties for chipboard?
- Made from chips of wood glued together with urea formaldehyde
- Usually veneered with an attractive hardwood or covered in a plastic laminate
What are the uses for chipboard?
- Kitchen and bedroom furniture
- Shelving and general DIY work
What are the properties of plywood?
- A very strong board, constructed of layers of veneer or piles, which are glued together with the grains at 90 degrees to each other
- Interior and exterior grades available
What are the uses for plywood?
- furniture making
- boat building and exterior work
What are the properties of hardboard?
- A very cheap particle board
- Can have a laminated plastic surface
What are the uses for hardboard?
Kitchen unit and furniture back panels
List 4 types of hardwoods?
- Oak
- Mahogany
- Beech
- Ash
List 4 types of softwoods?
- Pine
- larch
- cedar
What are three examples of adhesives?
- P.V.A
- Epoxy
- Contact adhesive
What is P.V.A?
- Poly vinyl acetate: is best for joining 2 pieces of wood together
What is epoxy?
A thermosetting resin that can be used to bond most types of materials
What is contact adhesive?
A glue type that creates a tacky bond in both surfaces to be joined
What can contact adhesive be used with?
most materials
What are the different types of wood joints?
- lap joint
- finger joint
- Dowel joint (has two holes)
- dovetail joint
- mortise + tenon joint
What are the permanent methods of joining woods?
- glues
- welding
- rivets
What are the temporary methods of joining woods?
- screws
- bolts
- nails
What are surface finishes?
One of the last stages of making a product. Adds a protective layer and improves the products visual appearance
What are examples of surface finishes?
varnish, paint, wax, polish
What is CAD?
computer aided design
What is CAM?
computer aided manufacturer
What is CNC?
computer numerical control
