Natural Defects (Junior Cert Wood Technology): Flashcards
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Causes of natural defects in wood
Causes of natural defects in wood
Tree growth & internal pressures
Shakes in wood definition
Shakes in wood definition
Splits/cracks from growth tensions
Heart shakes definition
Heart shakes definition
Splits at tree centre from internal pressure release
Knots in wood definition
Knots in wood definition
Circular areas where branches grow from trunk
Effect of knots on timber
Effect of knots on timber
Lessen strength but may be decorative
Pitch pockets definition
Pitch pockets definition
Resin build-ups affecting machining & finishing
Grain variations impact
Grain variations impact
Irregular patterns affecting machining & finishing
Structural impact of defects
Structural impact of defects
Weaken timber, less suitable for building
Aesthetic impact of defects
Aesthetic impact of defects
Appreciated for unique patterns in some uses
Example of wood with many knots
Example of wood with many knots
Scots Pine
Location of heart shakes
Location of heart shakes
At tree's centre
What causes shakes
What causes shakes
Growth tensions