1.2 Wood Part 2 Flashcards
What are the main advantages of plywood?
- Strong due to layers at right angles
- Resistant to warping and cracking
- Cost effective compared to solid timber
Plywood’s unique construction contributes to its strength and durability, making it ideal for various applications.
What are the disadvantages of plywood?
- Porous nature due to how layers are built up.
- Tends to splinter when cut
These disadvantages can affect the finish and usability of plywood in certain applications.
What is plywood made of?
Odd numbers of thin layers (veneers) of hardwood or softwood called laminates
The layers are oriented with the grain going at 90 degrees to each other and glued together under pressure.
List some uses of plywood.
- Making chests and cabinets
- Roof construction
- Flooring
- Sheds and building cladding
- Chairs
Plywood’s versatility makes it suitable for a wide range of construction and furniture applications.
True or False: Plywood is suitable for construction work due to its resistance to warping and cracking.
True
This property makes plywood a preferred material in various construction scenarios.
Fill in the blank: Plywood is built up of odd numbers of thin layers called _______.
[veneers]
The arrangement of these veneers contributes to the unique properties of plywood.
What is Blockboard made of?
Numerous strips of softwood sandwiched between two sheets of hardwood and glued under high pressure
Blockboard is designed for strength and stability.
List three advantages of Blockboard.
- Fairly strong all over sheet
- Cheap
- Resistant to splitting
Additional advantages include being lighter than MDF and plywood and generally good stability.
What are two disadvantages of Blockboard?
- Retains moisture
- Not as strong as the original wood used to construct it
Blockboard also requires veneer on the edges.
Name three uses of Blockboard.
- High quality and long-lasting furniture
- Bedroom units
- Kitchen worktops
Blockboard is suitable for various types of furniture and surfaces.
What is Chipboard made from?
Wood particles including chips, shavings, and sawdust glued together under heat and pressure
Chipboard is often used in furniture and construction.
List three advantages of Chipboard.
- Easy to use
- Relatively cheap
- Strong material that withstands pressure
Chipboard can also have wood-like features for aesthetic purposes.
What are two disadvantages of Chipboard?
- Retains moisture and swells
- Leaves rough edges when cut
Chipboard’s composition makes it prone to cracking over time.
Name three uses of Chipboard.
- Kitchen tops
- Furniture
- Flooring
Chipboard is often laminated with melamine for kitchen tops.
What is Hardboard made from?
Wood fibres obtained from chips and pulped wood waste
Hardboard is produced by bonding wood fibres under pressure.
List three advantages of Hardboard.
- Cheap
- Smooth surface for easy painting
- Resistant to dents and scratches when oil tempered
Hardboard can be adapted for various textures and finishes.
What are two disadvantages of Hardboard?
- Not suitable for outdoors due to poor water resistance
- Weak material
Hardboard’s limitations affect its usability in certain environments.
Name three uses of Hardboard.
- Cabinet panels
- Electronic component cabinets
- General purpose backing
Hardboard is versatile and used in various applications including packaging.
What does MDF stand for?
Medium Density Fiberboard
What is MDF composed of?
Fine wood dust and resin pressed into a board
What are the advantages of MDF? List at least three.
- Fairly strong and durable
- Easily made in industry
- Easily cut, shaped, and drilled
Can be painted without the need for a primer/undercoat.
True or False: MDF can be painted without an undercoat or primer.
True
What are some potential disadvantages of using MDF?
- Easily split and damaged
- Heavy
- Contains a lot of glue, which can damage cutting tools
Unless treated with an additure, it will absorb water/moisture and swell up.
When cut or sanded MDF can be breathed in which is a major health hazard.
Fill in the blank: MDF can be fire resistant and resistant to water if particular _______ and additives have been introduced.
resins
