Balsa
Ochroma pyramidale • Exotic/Tropical Hardwood
Grain Pattern
Generally straight with a medium to coarse texture; diffuse-porous with no distinct figure; flat-sawn appearance visible in sample.
Color Description
Pale cream to oatmeal colored heartwood, occasionally with a pinkish or yellowish cast. Sapwood is nearly white and indistinguishable from heartwood; low luster and does not significantly darken with age.
Hardness Rating
88 lbf (Very Soft); the softest commercial hardwood available.
Durability Rating
Non-durable; very susceptible to rot, decay, and insect attack. Generally used for indoor applications or sealed thoroughly.
Common Uses
Model building, aircraft prototypes, surfboards, insulation, theatrical props, musical instrument cores, and buoyancy devices.
Geographic Origin
Tropical South America (notably Ecuador), Central America, and the Caribbean.
Market Value & Sustainability
Estimated Market Value
$10.00 - $20.00 per board foot, though often sold in small hobbyist dimensions at a higher unit price.
Wood Age Estimate
Freshly cut modern stock; lacks oxidation or patina characteristic of older reclaimed material.
Sustainability Status
Not listed in CITES Appendices or on the IUCN Red List; widely available and fast-growing/sustainable.
Workability
Very easy to cut with a sharp hobby knife or razor, but easily crushed if tools are dull. Sands very easily but does not hold screws or nails well due to low density; glues exceptionally well.
Notable Features
Extremely low density and high strength-to-weight ratio. Very porous structure; practically odorless.
Finish Recommendations
Sanding sealer or wood filler is required if a smooth finish is desired due to high porosity; works well with light lacquers or airbrushed paints.
Identification Confidence
High; the distinct fuzzy texture, pale color, and visible open-pored structure are characteristic of the species Ochroma pyramidale.