26 veneering & inlay

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Transcript of 26 veneering & inlay

WOOD MATERIALS TECHNOLOGY

4th Edition

Chapter 26Veneering and Inlay

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

Veneering

GroundworkBase onto which the veneer is bondedPlywood and MDF make good groundwork Counter veneering with a cheaper veneer helps to prevent warping in

the board

Groundwork

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

Matching veneer

When matching the veneers, it is important to line up the grain carefully to get the best result

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

Borders

• Borders are used to frame a veneered pattern

− Using veneers to create a border

Creating a veneered border

Marquetry – window method

1) Draw the design2) Transfer the design on to the

veneer using carbon paper3) Cut out the shape and remove4) Place the space over another

piece of veneer lining up the grain

5) Cut through the gap or ‘window’ to the veneer below. Tape the cut-out piece into the gap

6) Build up the picture and add a frame

1) Fix the two veneers to a cutting surface

2) Transfer the design to the veneer using carbon paper

3) Cut through both veneer layers at the same time

4) The veneers are then interchanged and taped together

5) Glue the veneers to the background

Marquetry – overlay method

Parquetry – geometric patterns

Parquetry – geometric patterns

Lines of contrasting wood are inlaid to give decoration

Veneer motifs are also available

Inlay

Scratch stock

• Using the scratch stock

• Scratch stock

Quiz

What is the name of the line of wood at A in the diagram?

− Inlay

− 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

Describe how you would apply the finished veneer pattern onto the box shown.

What tool would be used to create the groove for the line of wood at A in the diagram?

− Scratch stock

− 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

Explain rotary cutting of veneers