I'd like to make 2-off of the shape shown in the following sketch...

http://audio.yachtsea.com/Spiral.jpg

Sizes haven't been finalised, but are of the following order, in mm...

Height: 600
Width: 500
Depth: 250

The smallest radius (in the centre of the spiral) is about 12mm, and I'm
thinking of a material thickness around 8mm. The idea is to form the thing
in a jig, such that the spiral holds its shape reasonably well when
removed - the whole thing will be enclosed within wooden boxes made of 18mm
birch ply, so pre-shaped sprials would make assembly easier.

I'm thinking of making the shape by building up a laminate of overlapping
sheets of thin ply, but I've never done any bendy wood stuff before. What
would be a good thickness to use? Is my minimum radius too small?

Any suggestions for alternative materials? I've been wondering if some sort
of thermoplastic could be used - something that could be softened with a hot
air gun and eased into shape.


--
Wally
www.artbywally.com
www.wally.myby.co.uk