Ironwood
Ironwood is one of the heaviest woods in the world. It weighs
about 90 lbs. per cubic foot, making it almost twice as heavy
as oak, ash, walnut and other more common woods. This wood
is so dense that it sinks in water rather than floating.
Ironwood cannot tolerate freezing temperatures, so it is most
prevalent at elevations less than 2,500 feet, along the hot,
dry arroyos in Southern Arizona, the eastern edge of Southern
California, and down into Sonora, Mexico. An ironwood tree takes
several hundred years to reach maturity and at least another
50 years, and possibly up to 1,000 years after it dies to season
properly. In the spring the tree blossoms with thousands of small
orchid-like lavender flowers, then seedpods containing small
beans form. The ripe beans were sometimes ground into flour.
If one were to pick the beans while they were fresh and green,
the taste would be very like fresh garden peas. Actually, the
ironwood tree belongs to the same family of plants as the peas
grown in our family gardens.
The Seri Indians who live along the coast
and islands of the Sea of Cortez made ironwood carving popular.
They made fish hooks, arrowheads and spears. Small pieces of
this wood were shaped into seals, dolphins, sharks, porpoises
and birds of the area as “toys” for their kids.
Because much ironwood has gone into bonfires and fireplaces,
carvers and jewelry makers today have difficulty finding wood
suitable for this work. Cracks and check marks must be removed
before beginning work. 700 to 1,000 lbs. of wood may gave to
be cut to get 60 to 70 lbs. of good, solid usable material.
Because of the extreme hardness of this fabulous wood, ordinary
woodworking tools dull quickly. This means shaping and sanding
the wood smooth is usually done with metal-cutting and lapidary
(stone cutting) tools. Some ironwood workers will even use carbide
tools. Many workers cut the wood to show outstanding grain and
color variations-therefore, no two pieces of jewelry or carvings
are alike.
Due to the quantity of natural oil in ironwood, it is usually
not necessary to put a finish on either jewelry or carvings.
Shellac, varnish or urethane is not used. Ironwood should be
finished with fine sandpaper, and then waxed. If the wax luster
dulls, simply rub with a soft, dry cloth until the luster returns.
Occasionally, a small amount of boot and shoe wax, such as Kiwi
Paste wax (brown) can be applied and polished with the soft cloth.
Because of the heavy density of ironwood, its fibers will not
expand and contract like softer woods. These carvings should
be kept out of direct sunlight in extremely hot weather.
Beautiful finished carvings and jewelry
can be seen in Gem & Mineral
Shows. Color will vary in these lovely pieces of artwork from
dark golden yellow to reddish brown and from light brown to almost
black.
(From The Aganzer, 02/96, The Rock Vein, Desert Hobbyist, via
Scribe, 12/96)