Selecting high quality materials is an essential part of your job at Modern Edge. While we aim to purchase only quality materials you will often find defects. These can be either 'natural' or 'artificial'.
Natural defects: Present in a growing tree, such as growth defects, grain irregularity, shakes and knots.
Artificial defects: Caused by careless handling, incorrect conversion and seasoning techniques and inadequate protection of timber.
Follow this link if you'd like to see some pictures of types of timber defects.
When selecting material for drawer or door panels, the grain direction and final appearance are two factors that must be considered.
If defects are found in timber, a decision needs to be made to replace the piece or place the piece in an unseen position provided the strength of the unit is not compromised.
When selecting solid timber from stock for machining cutting list components, you need to consider several points:
Here's an activity for you to try:
A curvature along the edges of timber
A curvature along the faces of the timber
A curvature across the faces of timber. The effect is most common on back sawn boards.
A distortion across the faces which rotate the ends of the timber in opposite directions.
A fine, regular crack which extends across the face or edge or both face and edge.
Shallow cracks extending along the grain on the face or edge.
Do not usually affect the strength of the timber but they do downgrade the appearance.
Cracks in the timber which contain gum.
Gum deposits in veins or blotches on the surfaces of the timber. Structural strength is affected when gum deposit is loose and does not contain wood fibres.
|Insect and termite holes||
Termites, borers and insects make holes and tunnels in the timber which seriously affect its strength and appearance
Included sections of the branch in the timber.
|Want and wane||
The absence of wood from the edge of a piece of timber.
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