| The woods I commonly use in building boats are all
highly rot resistant:
Pepperwood or California Bay Laurel (Umbelluria californica)
- An evergreen tree with long oval leaves 3-6. Leaves have strong
spicy odor. Bark is gray and flaky, commonly moss-covered. Small green
flowers in early spring, producing green nutlets. Growth tends to broad
spreading crown with large trunk. Native along west coast from Oregon
down to central California.
- Characteristics of Wood: Slightly hard and moderately light.
Wood pale white when freshly cut, oxidizing to reddish tan, commonly
with blue/purple mineral streaks. Freshly cut wood has same odor as
leaves, but weaker. High strength relative to weight. Extremely dimensionally
stable with moisture change. Grain very wavy and therefore difficult
to work with edge tools. Tends to resist splitting and abrasion well.
Trees reach enormous size and produce clear wood as well as grown shapes.
Very rot resistant if growing at elevation, very poor resistance otherwise.
Reason for distinction unknown.
Black Locust (Robinia pseudoacacia)
- A deciduous tree with many small pinnately compound leaves, dark blue
green in color. Dark brown bark thickly furrowed into long forking ridges,
often with a gray lichen coating. Flowers in late spring with many clusters
of showy white blooms. Fruit consists of long seedpods. Growth form
tends toward many upright crooked branches. Native to eastern central
US, but now naturalized from Maine to California. Planted widely for
shelterbelts and ornamentals. Grows and spreads rapidly.
- Characteristics of Wood: Extremely hard and heavy. Wood having
yellow-green cast when freshly cut, oxidizing to a faint orange. Very
strong, possibly the strongest native timber per dimensional unit. Grain
tends to be wavy, making it difficult to work with edge tools, as well
as difficult to split. Crooked branching growth form makes clear lengths
difficult to find but produces many useful grown shapes.
When straight grained locust bends very well with steam. Extremely rot
resistant.
Black Cherry (Prunus secortina)
- A deciduous tree with single elliptical leaves 2-4 long. Smooth
dark grey bark becoming fissured and scaly. Growth tends to long upright
trunk and uneven crown. Small white flowers spread along drooping stem
appear in mid-spring. Native and common east of the plains. Cherry is
heavily harvested for furniture and paneling.
- Characteristics of Wood: Moderately hard and heavy. Wood pink
when freshly cut, oxidizing to dark red/maroon over time. Tough and
flexible, cherry steam bends well. It often grows with wavy grain, creating
problems in tooling with blades. Growth form makes clear lengths readily
obtainable.
Northern White Cedar (Thuja occidentalis)
- An aromatic evergreen with small pointed needles growing in flat opposite
pairs. Light reddish brown bark growing in narrow shedding strips. Produces
small upright elliptical cones. Except in dense stands, this cedar grows
with many branches in tall narrow cone. Native from New York north to
S. Canada, Maine west to Minnesota.
- Characteristics of Wood: Soft and extremely light. Wood ranging
from white to reddish. Good strength relative to low weight and tends
to be flexible. Very dimensionally stable with moisture changes. Grain
tends to be even and consistent, making it a joy to work with edge tools.
Resins tend to build up on cutting points of power tools. Unfortunately
clear lengths difficult to obtain. Very rot resistant.
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