All shapes are made up of a combination of lines, either straight
or curved and the combination of these lines will determine whether the shape
is aesthetically appealing or not. The classic Roman Ogee shape for example
is simply a convex curve leading to a concave curve, but even with this basic
shape the proportions of the curves have to be correct to each other or the
piece will look top or bottom heavy.
When considering a design for a piece to be turned, there are many factors to
consider. Firstly examine the wood, the size, shape and any irregularities may
determine a particular shape or style. If for example it is a round bowl blank,
decide whether the curve of the grain is going to go with or against the curve
of the bowl. Secondly, is it going to be an open bowl or a hollow form with
just an opening at the top, are there certain aspects of the grain that are
interesting but could be lost if the middle is completely removed for an open
bowl. Next, is the final piece going to be practical, such as a fruit bowl or
an ornamental object, this could determine if the bowl has a foot to stand on
or whether it sits flat down for stability.
Before turning a piece it is advisable to have a positive idea as to what the
final shape will be. Examine the wood as previously mentioned, then sketch the
design on paper so that it can be used as a reference whilst turning, also modifications
to both drawing and actual piece can be made together. The final shape may also
determine how the wood is held on the lathe, with size and irregularities to
consider.
After all said, it can be great fun just to put a piece of wood on the lathe
and start turning it and watch the shape develop and alter as each cut is made,
so the most important thing is , enjoy yourself.
