>We find that the ideal dummy board is made of 1/2" marine ply (which does not de-laminate) with a top bar of the same width screwed and glued to it (hardwood is best as it is stronger).
The terms hardwood and softwood are botanical, and do not refer to the
hardness and softness of the timber. Or indeed to the strength. Balsa is
a hardwood, in Australia cypress pine a softwood, is a very hard timber
indeed.
Geoff Manning
>
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