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26 veneering & inlay

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26 veneering & inlay

  1. 1. WOOD MATERIALS TECHNOLOGY 4th Edition
  2. 2. Chapter 26 Veneering and Inlay
  3. 3. Veneering  Veneers are thin sheets of wood  Advantages of veneering – Rare and expensive woods are used efficiently – Large areas of wood are covered without risk of splitting – Veneers are used to make decorative patterns
  4. 4. Groundwork  Base onto which the veneer is bonded  Plywood and MDF make good groundwork  Counter veneering with a cheaper veneer helps to prevent warping in the board Groundwork
  5. 5. Cutting veneers  Veneer is cut with a sharp knife or scalpel – Take care to cut away from yourself and mind your fingers – Score the veneer a number of times to cut through
  6. 6. Matching veneer  When matching the veneers, it is important to line up the grain carefully to get the best result
  7. 7. Applying veneer • Ensure groundwork is flat and clean • Fill any defects and sand smooth • Seal the wood with a thin film of adhesive − Impact adhesive − Contact adhesive
  8. 8. Borders • Borders are used to frame a veneered pattern − Using veneers to create a border
  9. 9. Creating a veneered border
  10. 10. Marquetry – window method 1) 2) 3) 4) 5) 6) Draw the design Transfer the design on to the veneer using carbon paper Cut out the shape and remove Place the space over another piece of veneer lining up the grain Cut through the gap or ‘window’ to the veneer below. Tape the cut-out piece into the gap Build up the picture and add a frame
  11. 11. Marquetry – overlay method 1) 2) 3) 4) 5) Fix the two veneers to a cutting surface Transfer the design to the veneer using carbon paper Cut through both veneer layers at the same time The veneers are then interchanged and taped together Glue the veneers to the background
  12. 12. Parquetry – geometric patterns
  13. 13. Parquetry – geometric patterns
  14. 14. Inlay  Lines of contrasting wood are inlaid to give decoration  Veneer motifs are also available
  15. 15. Scratch stock • Scratch stock • Using the scratch stock
  16. 16. Quiz
  17. 17.  What is the name of the line of wood at A in the diagram? − Inlay
  18. 18.  Describe how you would apply the finished veneer pattern onto the box shown. − Seal with impact adhesive − Apply adhesive and wait for it to get tacky − Position veneer over the piece and line it up − Bring the surfaces together carefully − Squeeze out the air pockets from the centre with a veneer hammer − Remove masking tape from top surface − When the veneer has set, trim off excess veneer and sand down
  19. 19.  What tool would be used to create the groove for the line of wood at A in the diagram? − Scratch stock
  20. 20.  Explain rotary cutting of veneers − Bark is removed from log − Wood is softened with steam − Log is mounted on a big lathe − Veneer is peeled from the log with a cutting knife

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