chapter 15 manufactured boards. manufactured boards making boards and sheets from wood or wood...

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Chapter 15 Manufactured boards

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Page 1: Chapter 15 Manufactured boards. Manufactured boards Making boards and sheets from wood or wood products – Veneers – Sawdust – Wood fibres – Wood strips

Chapter 15Manufactured boards

Page 2: Chapter 15 Manufactured boards. Manufactured boards Making boards and sheets from wood or wood products – Veneers – Sawdust – Wood fibres – Wood strips

Manufactured boards

Making boards and sheets from wood or wood products– Veneers– Sawdust– Wood fibres– Wood strips– Wood flakes

Page 3: Chapter 15 Manufactured boards. Manufactured boards Making boards and sheets from wood or wood products – Veneers – Sawdust – Wood fibres – Wood strips

Plywood

Cutting the veneer

Make-up of plywood– Veneers at 90° to each other– Odd number of layers (5/7)

Page 4: Chapter 15 Manufactured boards. Manufactured boards Making boards and sheets from wood or wood products – Veneers – Sawdust – Wood fibres – Wood strips

Types of plywood

WBP– Water and Boil Proof– Exterior grade

Marine plywood– Boat building – Exposed situations, roofs

Page 5: Chapter 15 Manufactured boards. Manufactured boards Making boards and sheets from wood or wood products – Veneers – Sawdust – Wood fibres – Wood strips

Blockboard

Strips of softwood glued together and faced with veneers

Does not split easilyCan screw into the edgeWide sheets (8’ X 4’)

Page 6: Chapter 15 Manufactured boards. Manufactured boards Making boards and sheets from wood or wood products – Veneers – Sawdust – Wood fibres – Wood strips

Pineboard/lamwood

Made from thin softwood strips, glued together

Makes a wide board in softwood

Uniform thickness (12 – 25mm)Boards tend to cupUseful for projectsHardwood examples can be

obtained

Page 7: Chapter 15 Manufactured boards. Manufactured boards Making boards and sheets from wood or wood products – Veneers – Sawdust – Wood fibres – Wood strips

OSB – oriented strand board

Page 8: Chapter 15 Manufactured boards. Manufactured boards Making boards and sheets from wood or wood products – Veneers – Sawdust – Wood fibres – Wood strips

ChipboardWood chips are glued Pressed into sheetsOften faced with wood veneer

or plastic laminateEdges of the board need to be

covered

Page 9: Chapter 15 Manufactured boards. Manufactured boards Making boards and sheets from wood or wood products – Veneers – Sawdust – Wood fibres – Wood strips

Edges

• Edges of chipboard should be covered

Page 10: Chapter 15 Manufactured boards. Manufactured boards Making boards and sheets from wood or wood products – Veneers – Sawdust – Wood fibres – Wood strips

MDF (Medium density fibreboard)

Very popular board materialOften faced with veneer or

plastic laminateMade with fine wood fibres

in three layersNeed to drill into face

before nails or screws are inserted

Fine dust is harmful

Page 11: Chapter 15 Manufactured boards. Manufactured boards Making boards and sheets from wood or wood products – Veneers – Sawdust – Wood fibres – Wood strips

Hardboard

• Available in thin sheets • One face smooth, one

textured• Often faced with plastic

laminate• Back of cabinets, base of

drawers• Only used indoors

Page 12: Chapter 15 Manufactured boards. Manufactured boards Making boards and sheets from wood or wood products – Veneers – Sawdust – Wood fibres – Wood strips

Quiz

Page 13: Chapter 15 Manufactured boards. Manufactured boards Making boards and sheets from wood or wood products – Veneers – Sawdust – Wood fibres – Wood strips

Name the following manufactured boards

− Pineboard− Chipboard

Page 14: Chapter 15 Manufactured boards. Manufactured boards Making boards and sheets from wood or wood products – Veneers – Sawdust – Wood fibres – Wood strips

Three layers of wood are being glued to make plywood. Draw a sketch to show the direction in each layer.

Page 15: Chapter 15 Manufactured boards. Manufactured boards Making boards and sheets from wood or wood products – Veneers – Sawdust – Wood fibres – Wood strips

The edges of chipboard look poor. Draw a sketch to show how the edges are covered.

Page 16: Chapter 15 Manufactured boards. Manufactured boards Making boards and sheets from wood or wood products – Veneers – Sawdust – Wood fibres – Wood strips

− Large sheet sizes− Cover large areas easily− Uniform thickness− Stable – no shrinkage− Do not warp− Use woods efficiently − Little waste − Often veneered over – helps to

save the rainforests

State some advantages of manufactured boards

Page 17: Chapter 15 Manufactured boards. Manufactured boards Making boards and sheets from wood or wood products – Veneers – Sawdust – Wood fibres – Wood strips

Water Boil Proof

What do the letters WBP stand for?