"Ed Sirett" wrote in message
...
Grunff wrote:

Paul wrote:

Or, is it just too hard and too heavy? I was thinking of tongue and
groove
floorboards on a wooden or metal frame.

I think it would be very heavy, which would make it [a]
difficult to build and [b] difficult to install once built.

There's a big diffenence in weight between 1mm steel sheet and
12mm timber.

At first I thought you are right, but then I start to think about it.

Relative densitites of wood are say 0.9 and steel 7.8 (IIRC).
0.9 *12mm =9.6 and steel 1.0mm* 7.8= 7.8

It depends on what you mean by "big" in this context I would have
though that would mean at least double?


It may be worth me considering a metal frame as light and rigid as i can
get, sheeted with relatively thin (1/2") tongue & groove.

Problem then is matching up spring gear, etc.

thanks for the feedback
paul