Four types of making:
1. Construction
2. Wasting
3. Forming
4. Casting
Two types of wood:
Soft wood: needle-bearing (evergreen. pine, cedar, fir, spruce.)
Hard wood: dense (deciduous. mahogany, oak, birch)
Trees have rings (one for each year of age).
Grain has direction. Working along the grain is natural and easier than working across it.
More: http://en.wikipedia.org/wiki/Wood
