Our Quality
It is probably impossible to completely eliminate movement in wood,
but this may be approximated by chemical modification. This is the treatment
of wood with chemicals to replace the hydroxyl groups with other hydrophobic
functional groups of modifying agents (Stamm, 1964)
At no stage in production do we use chemical modifications!
This is to ensure the completion of the product life cycle for disposal
purposes.
Wood retains its hygroscopic characteristics after it is put into use. It
is then subjected to fluctuating humidity, the dominant factor in
determining its EMC. These fluctuations may be more or less cyclical, such
as diurnal changes or annual seasonal changes. In order to minimize
the changes in wood moisture content or the movement of wooden objects in
service, wood is usually dried to a moisture content that is close to the
average EMC conditions to which it will be exposed. These conditions vary
for interior uses compared with exterior uses in a given geographic
location....Since wood is a hygroscopic substance wood taken out of a
kiln in Thailand can reabsorb moisture while here and during transport in
the container. This can cause changes in the wood on some pieces.
Complete Article © http://en.wikipedia.org/wiki/Wood_drying
A note on Natural Monkey Pod Wood
For Samanea saman (aka
Rain Tree, Acacia, and others depending on the country of origin) the heart
wood color ranges from light reddish beiges to dark reddish browns
(sometimes with black swirls). Due to humidity, the wood ages in front of
your eyes as small cracks appear in the grain over time depending on where
you live. It's a little piece of life transported straight into your home.
Direct sunlight can cause more checking on the ends (cracking), but simply
rub in a natural clear wood oil to seal again and enjoy the beauty of the
Monkey Pod wood!
Drying the
products after Carving
First Stage
After hand carving, the rough products are brought to a solar oven, where
over a period of months they are brought down to below 30% MC (moisture
content) as measured with non-invasive and invasive Delmhorst wood lumber
meters.
Second Stage
If the items are needed before drying naturally below 11% MC in the solar
ovens, they are then placed into a propane fired kiln where they're brought
down in stages at varying temperatures to 20% MC and then again to below 10%
MC.
At the end of this stage
we finish by raising the temperature high enough (80°-90°C or 176°-194°F) to
insure that there are no parasites in the wood. drying can be difficult as
most of our designs have varying wall thicknesses. We “lose” a percentage of
products in the process from structural stress cracks at this stage.
However, it is better to happen here before the customer receives the
product. We also use the "lost" wood for repairs so as not to waste
anything.
Third Stage
After obtaining an internal MC of below 11%, we sand the product to smooth
the rough carving into the desired shape. This is all done by eye so every
piece is unique, sizes are not exact, and products are not perfectly square.
The beauty of the completely unique piece can start to be seen at this time!
Fourth Stage
Now that we have exposed all of the natural and drying cracks and wood
inclusions by rough sanding, we smooth and blend these areas. This is the
finishing sanding stages. One group will finish sand the overall product,
while another inspects and finish sands any inclusions, cracks, or marks by
hand.
Fifth Stage
At this stage the product goes through final Quality Controls, individually
piece by piece, to discuss any corrections required with the finish sanders.
Once approved the piece is assigned to an order for the required finish.
Sixth
Stage
Applying the oil is a time consuming art. Even though the wood has been
sanded smooth with progressively finer sand paper the nature of the wood is
to have cross hatched surfaces exposed at times. The oils are applied in
three stages over the course of five to seven work days. Depending on the
weather the oil has to absorb in and dry into the wood to build up a surface
that can be buffed to a matte finish.
We do not use any wood sealers or chemical bases so there can be dull and
rough spots.
This is keeping with our policy of creating an all natural piece that can
complete the product life cycle and be safely disposed of into the earth
from which it came.