Bamboo for
Bows
This
year I decided to try growing some bamboo on our farm here in
Southern Ontario. Finding good seed stock here in Canada is hard to
do, and quite expensive. I am starting out with just a few plants
to see what happens. For making the face laminate I chose a variety
called Madake. It’s a timber type of
bamboo which grows over 50 feet tall and up to 5” in diameter, for
the culm. The characteristics desirable
in bamboo for bow making are as follows:
The
nodes should be low or flat on the surface, and the spacing between
the nodes should be
12” –
18” apart. Each node is a stiff spot on the bow. The culm wall
should be narrow, ¼” – 3/8” in thickness with the power fibers close
to the surface. This is where bamboo gets its strength, so when you
remove the pith or inside wall to the desired thickness, you leave
as many power fibers intact as possible.
When
the culms are ready to harvest, they are cut to length and split
while green into workable pieces. It then has to be dried and cured
for a year before it’s ready to be used. Like wood, bamboo gets
better in quality the longer it ages. Bamboo draws moisture very
easily, so it need to be stored in a low
humidity area. This could be in a dry box with a light bulb in it
to keep moisture away. Sun cured bamboo has a deep gold color
that’s rich and beautiful. |