1. The shuttle is made up of a POST and two SHELLS.
2. The post is the part that keeps the two shells "apart" and indeed
"together" also.
3. The post has a height, this is the distance that the two shells are kept
apart where the post connects to the shells.
4.The two shells are the "Boat" shaped pieces that keep the thread on the
shuttle and allows it to be able to "come off" the post in a controlled
manner. i.e. the "click" as the thread is wound off the post. [the click is
not essential but is a good feature in my opinion as if you should drop the
shuttle the thread will not spill out and have to be re wound onto the post.
A click on one end of the shells is acceptable.]
5 there is a clear relationship between the height of the post and the curve
and or length of the shells. I do not know what it is mathematically, I do
it by trial and error and now I have "jigs" for each of my shuttles.
6.The shells are like very elongated diamonds but usually these sides are
curved rather than having points left in the widest part of the shell.
7. So shells have a length i.e. how long they are and a width i.e. the width
at the widest part of the shells. The extremes of the length are called the
points. i.e. the points where the two shells touch.
8. They also have a thickness, which is the thickness of the flat "wood"
[or whatever material you might use] Normally this thickness is less than
1/16 of and inch and often a great deal less. It can be slightly thicker at
the widest part of the shell and thinner the nearer it gets to the points of
the shells.
Part two will be two methods of carving a shuttle from solid wood.
Jean and Brian from Cooranbong, Australia
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