Color: Cream-colored sapwood; heartwood is honey-gold to brown with darker knots throughout.
Variations Within Species And Grades: High degree of color variability.
Hardness/Janka: Janka: 1375; (7% harder than Northern red oak.)
Dimensional Stability: Excellent (change coefficient .00162; 56% more stable than red oak). However, actual installations have demonstrated significant movement in use.
Sawing/Machining: Good machining qualities.
Nailing: Can be brittle (like Brazilian cherry); splits easily.
Sanding: Tendency to clog paper due to high resin content. Hard plating & screening may leave swirls; screening more than twice may be necessary. The knots are extremely hard & may cause wave in the floor. a 12-by-18 inch oscillating sander is recommended as the may not dry if standard procedures are followed. Moisture-cure urethane, conversion varnish, or water base finishes are generally more successful.
Finishing: Knots may cause drying problems with some finishes.
Comments: Potential for respiratory/allergic reactions.
Origin: South America