Re: [bolger] Ipe
Here is some additional information on Ipe (perhaps even more than you might
want) on Ipe from the US Forrest Service:
Ipe, Bethabara, Lapacho
Family: Bignoniaceae
Other Common Names: Amapa (Mexico), Cortez (Honduras, Nicaragua, Costa Rica),
Guayacan (Panama),
Guayacan polvillo (Colombia), Flor Amarillo (Venezuela), Greenhart (Surinam),
Madera negra (Ecuador), Tahuari
(Peru), Ipe (Brazil), Lapacho negro (Paraguay, Argentina).
The Wood:
General Characteristics: Heartwood olive brown to blackish, often with
lighter or darker striping, often covered
with a yellow powder; sharply demarcated from the whitish or yellowish
sapwood. Texture fine to medium; luster
low to medium; grain straight to very irregular; rather oily looking; without
distinctive odor or taste.
Weight: Basic specific gravity (ovendry weight/green volume) 0.85 to 0.97;
air- dry density 66 to 75 pcf.
Mechanical Properties: (First and third sets of data based on the 2-in.
standard, the second on the 1-in.
standard.)
Moisture content Bending strength Modulus of elasticity Maximum crushing
strength
(%) (Psi) (1,000 psi) (Psi)
Green (73) 22,560 2,920 10,350
12% 25,360 3,140 13,010
12% (24) 25,200 3,010 14,000
12% (44) 28,000 3,350 NA
Janka side hardness 3,060 lb for green material and 3,680 lb at 12% moisture
content. Forest Products Laboratory
toughness average for green and dry material is 404 in.-lb. (5/8-in.
specimen).
Drying and Shrinkage: Generally reported to air-dry rapidly with only slight
checking and warping. Kiln schedule
T3-C1 is suggested for 4/4 stock. Shrinkage green to ovendry: radial 6.6%;
tangential 8.0%; volumetric 13.2%.
Movement after manufacture is rated as small.
Working Properties: Moderately difficult to work especially with hand tools;
has a blunting effect on cutting
edges, finishes smoothly except where grain is very roey The fine yellow dust
produced in most operations may
cause dermatitis in some workers.
Durability: Heartwood is very resistant to attack by decay fungi and
termites; not resistant to marine borers. T.
guayacan however, is reported to have good resistance in Panama waters.
Preservation: The wood is reported to be extremely resistant to preservation
treatments.
Uses: Railroad crossties, heavy construction, tool handles, turnery,
industrial flooring, textile mill items,
decorative veneers.
Regards,
Warren
want) on Ipe from the US Forrest Service:
Ipe, Bethabara, Lapacho
Family: Bignoniaceae
Other Common Names: Amapa (Mexico), Cortez (Honduras, Nicaragua, Costa Rica),
Guayacan (Panama),
Guayacan polvillo (Colombia), Flor Amarillo (Venezuela), Greenhart (Surinam),
Madera negra (Ecuador), Tahuari
(Peru), Ipe (Brazil), Lapacho negro (Paraguay, Argentina).
The Wood:
General Characteristics: Heartwood olive brown to blackish, often with
lighter or darker striping, often covered
with a yellow powder; sharply demarcated from the whitish or yellowish
sapwood. Texture fine to medium; luster
low to medium; grain straight to very irregular; rather oily looking; without
distinctive odor or taste.
Weight: Basic specific gravity (ovendry weight/green volume) 0.85 to 0.97;
air- dry density 66 to 75 pcf.
Mechanical Properties: (First and third sets of data based on the 2-in.
standard, the second on the 1-in.
standard.)
Moisture content Bending strength Modulus of elasticity Maximum crushing
strength
(%) (Psi) (1,000 psi) (Psi)
Green (73) 22,560 2,920 10,350
12% 25,360 3,140 13,010
12% (24) 25,200 3,010 14,000
12% (44) 28,000 3,350 NA
Janka side hardness 3,060 lb for green material and 3,680 lb at 12% moisture
content. Forest Products Laboratory
toughness average for green and dry material is 404 in.-lb. (5/8-in.
specimen).
Drying and Shrinkage: Generally reported to air-dry rapidly with only slight
checking and warping. Kiln schedule
T3-C1 is suggested for 4/4 stock. Shrinkage green to ovendry: radial 6.6%;
tangential 8.0%; volumetric 13.2%.
Movement after manufacture is rated as small.
Working Properties: Moderately difficult to work especially with hand tools;
has a blunting effect on cutting
edges, finishes smoothly except where grain is very roey The fine yellow dust
produced in most operations may
cause dermatitis in some workers.
Durability: Heartwood is very resistant to attack by decay fungi and
termites; not resistant to marine borers. T.
guayacan however, is reported to have good resistance in Panama waters.
Preservation: The wood is reported to be extremely resistant to preservation
treatments.
Uses: Railroad crossties, heavy construction, tool handles, turnery,
industrial flooring, textile mill items,
decorative veneers.
Regards,
Warren
While nosing around at the lumberyard today, I came a cross a new (to me)
wood. It is called Ipe (e-pay). It is a heavy, dense oily wood, reputed to
be fire-proof. The yard had it in clear lengths, 5-1/2 wide by a full inch
thick and in 8, 12 and 16' lengths. It was priced at $1.98 a lineal foot.
It is so dense it need to be pre-drilled before you can screw or nail it. I
was hoping to use it in place of Teak, but it turned out to be browner than
I wanted. It would appear to be ideal for those of you that like to make
their own chocks & blocks. You could use it for bottoms, too, if you wanted
built in ballast and for it to be bullet proof :-)
Paul W. Esterle
Capt'n Pauley Video Productions
423.989.3159
S/V Bryn Awel, Columbia 10.7
Bristol, Tenn. USA
http://www.captnpauley.bigstep.com
http://pages.preferred.com/~pesterle/
wood. It is called Ipe (e-pay). It is a heavy, dense oily wood, reputed to
be fire-proof. The yard had it in clear lengths, 5-1/2 wide by a full inch
thick and in 8, 12 and 16' lengths. It was priced at $1.98 a lineal foot.
It is so dense it need to be pre-drilled before you can screw or nail it. I
was hoping to use it in place of Teak, but it turned out to be browner than
I wanted. It would appear to be ideal for those of you that like to make
their own chocks & blocks. You could use it for bottoms, too, if you wanted
built in ballast and for it to be bullet proof :-)
Paul W. Esterle
Capt'n Pauley Video Productions
423.989.3159
S/V Bryn Awel, Columbia 10.7
Bristol, Tenn. USA
http://www.captnpauley.bigstep.com
http://pages.preferred.com/~pesterle/