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 Cumaru Flooring


Cumaru Flooring


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Species - Domestic

Top portion is finished with water-base finish; bottom with oil-based finish


Appearance


Color:At first, red-brown or purple-brown with light yellow-brown or purple streaks, after exposure uniform light brown or yellow-brown.

Grain:  Fine texture, interlocked, waxy or oily feel.

Variations:  WDramatic shading that mellows as the floors matures

Workability


Sawing/Machining: Works well, but is very hard – use carbide blades and bits.


Sanding: Scratches are easily seen – each sanding. Suggested Sequence:

First Cut: 36 or 40

Second Cu: 50 or 60

Third Cut: 80

Hard Plate: 100

Screen: 80, then 100



Nailing: Predrilling and hand-nailing is preferred.


Finishing: Test all products before using them on the actual floor. Oil-modified finishes may not dry if standard procedures are followed. Moisture-cure urethane, conversion varnish, or water base finishes are generally more successful.


Comments Has been known to cause contact dermatitis.

Properties


Hardness/Janka: 3540; 174% harder than Northern red oak


Dimensional Stability: Average (7.6; 7% more stable than red oak).


Durability: Availability


Moderately available.