Unit 1004 Produce basic woodworking joints © Pearson Education 2010 Printing and photocopying permitted Learning Outcome 4 Know about selecting materials.

Slides:



Advertisements
Similar presentations
Veneer and Laminates in Residential Construction Steve Kelly Advanced Diploma in Building Design(architectural) June 2009.
Advertisements

Wood.
Timber Derivatives- Manufactured Boards
Man Made Board Quiz.
Selecting Lumber.
Characteristics of timber - Relationship to properties
CRAFT & DESIGN SOLID TIMBER Woods are classified into two main groups, softwoods and hardwoods. You should try to understand the main differences between.
Conversion of Timber. Trees are cut down during winter as there is less growth, therefore less sap After felling trees are transported to sawmills to.
UNIT 3 TECHNICAL MATERIALS WOODS. CLASSIFICATION WOODS NATURAL SOFTWOODS They come from coniferous trees. They are ever green, and have got NEEDLE shaped.
WOOD ACS-206 WEEK 6 UNIT 17 CE-ME-MECE-MSE. Categories of Wood There are mainly two categories of wood: 1. Hardwood 2. Softwood.
Conversion of Timber.
Design and Nightingale Academy Wood and Joining Wood.
Manufactured Boards J. Byrne 2013 Manmade Boards.
Manufactured Panel Products
Lumber Section II. Lumber Structural Strength Depends on species and grade, and the direction in which the load is acting with respect to grain of the.
Chapter 15 Manufactured boards
Man Made Board.
Chapter 16 Processes Used to Form WoodMaterials. Objectives Two basic wood forming processes: bonding and bending. Composition boards: hardboard, insulation.
Manufactured Boards.
Chapter 2 Lumber.
Timber Seasoning.
Lumber one of the World’s oldest construction material.
WOODWORKING Technology Education Dept. Bellwood-Antis Middle School Mr. Mackereth.
Chapter 8 Wood and Wood Products.
Course: Manufacturing II Unit: Material ID.  Lumber is various lengths of wood used in the construction and furniture making trades.
Source Natural Origin Europe, Scandinavia Properties and features: Easy to work, relatively cheap, readily available. May contain knots, which weaken.
Lumber Wood. Tree Growth  1.Dead Bark – Protective Layer  2.Living Bark – Composed of hollow longitudinal cells that conduct nutrients down the truck.
Wood Technology. Structure and Growth  Formed of long tubular fibers, about 1/25in in length in hardwoods and 1/8in for softwoods  Annual rings- composed.
Learning Intention: Understand how trees are converted and why they need to be seasoned.
Lumber production and Types
timber in internal applications Material Basics Timber and Wood Products Basic material properties and characteristics.
Seasoning Seasoning is the reduction of the moisture content of wood.
TECH 320 – Non-Metallic Processes Lumber Lecture Deacon Band.
 There is an enormous selection of different timbers available. This range can be split into two groups:  Softwoods  Hardwoods.
Processes Used to Form Wood Materials Chapter 16.
Ch students per table 2.Workbook & Textbook 3.Pencil / Pen 4.Start when quiet.
Sirodgze2010.  HARDWOOD – ‘deciduous’ broad leaves ex: narra, yakal, kamagong oak, walnut, maple, etc. SOFTWOOD – ‘coniferous’ needle-like leaves ex:
Wood Wood is one of the most adaptable and versatile of materials. It has been used in manufacture for thousands of years. Examples of wooden products.
1 Woods (RWTRM pages 46 – 54) Types of Materials Wood is a hard, tough substance that forms the trunks of trees. It has been used for thousands of years.
Cutting and shaping wood BDHS Plain-sawed or Plain sawn Lumber – most economical and least wasteful.
Woods and Processes Theory. Knowledge and Understanding.
TASK – Start a mind-map for wood types
Vocabulary Timber خشب البناء Deciduous المتساقطة Coniferous صنوبري الثمر lumber خشب مقطوع, خشب منشور a sawmill منشرة sawn منشور Glue صمغ Laminated مصفح.
Manufactured boards Manufactured boards are timber sheets which are produced by gluing wood layers or wood fibres together. Manufactured boards often made.
Manufactured Boards Resistant Materials
Softwood Year 8 RM Wood There are 3 types of wood Name of wood
Timber Conversion J.Byrne 2012.
Taxonomy of Wood Products Engineered Wood Products
Man Made Board.
A REPLACEMENT FOR SOLID TIMBER
Engineering Technical English Islamic University of Gaza
AQA GCSE 1 Sources, origins and properties Design and Technology 8552
Engineering Technical English Islamic University of Gaza
Materials Training Board Section 11/18/2018.
Recognition of timber and timber-based manufactured boards
Evergreen all year round
Man Made Board Quiz.
Material Properties – Natural & Manufactured Boards
Wood Working.
Man Made Board.
Hardwoods & Softwoods.
Building Materials.
Timber Seasoning.
Tree Conversion.
KEY WORDS Timber Hardwood Softwood Deciduous Evergreen
7.2 Wood and manufactured board
WOOD SUPPLY Seasoning wood
SOFTWOOD Coniferous (doesn’t loose it’s leaves in winter) trees provide softwood. They have needle like leaves and keep them throughout the year. They.
Presentation transcript:

Unit 1004 Produce basic woodworking joints © Pearson Education 2010 Printing and photocopying permitted Learning Outcome 4 Know about selecting materials

Unit 1004 Produce basic woodworking joints © Pearson Education 2010 Printing and photocopying permitted Timber conversion Conversion is sawing of a log into boards or planks. There are four main methods of conversion: ●Through and through ●Tangential ●Quarter ●Boxed heart

Unit 1004 Produce basic woodworking joints © Pearson Education 2010 Printing and photocopying permitted Timber conversion: Through and through and tangential Through and through – simplest and most economical; board prone to shrinkage and distortion Tangential – used for floor joists and beams as it is very strong

Unit 1004 Produce basic woodworking joints © Pearson Education 2010 Printing and photocopying permitted Timber conversion: Quarter sawn and boxed heart Quarter sawn – best quality timber but most expensive Boxed heart – radial sawing used when the heart of the tree is rotten

Unit 1004 Produce basic woodworking joints © Pearson Education 2010 Printing and photocopying permitted Seasoning of timber Timber from newly felled trees has a high proportion of moisture. This must be removed. The main reasons for seasoning are: ●Make sure shrinkage happens before timber is used ●Make sure moisture content is below 20% ●Dry timber is stronger ●Dry timber is less likely split or distort

Unit 1004 Produce basic woodworking joints © Pearson Education 2010 Printing and photocopying permitted Kiln seasoning For kiln drying: ●Air circulation supplied by fans ●Heat supplied by heating coils ●Humidity raised by steam sprays How is a progressive kiln different? What other method can be used?

Unit 1004 Produce basic woodworking joints © Pearson Education 2010 Printing and photocopying permitted Classifying and identifying timber Timber is either: ●Hardwood ●Softwood This refers to botanical differences and not the strength of the timber. To identify timber it is useful to have a personal collection of small samples. How many types of timber do you know? Research what each is used for.

Unit 1004 Produce basic woodworking joints © Pearson Education 2010 Printing and photocopying permitted Manufactured boards Most common manufactured boards are: ●Plywood – thin layers of timber (veneers) glued together and graded by type of glue ●Laminated boards – strips of wood laminated together and sandwiched between veneers ●Chipboard – compressed wood chips and flakes bonded with a synthetic resin glue ●Fibre board – pulped wood mixed with adhesives and pressed into sheets (hardboard, softboard, MDF)