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For anyone thats interested I have found a source for Baltic Birch Plywood in Sydney. I haven't seen it, only spoken to the guy on the phone. From what he describes it is the stuff we need, multiple thin even laminations and each layer is birch. He advised my that it is an A-Bond glue which is waterproof and that which is used for marine ply. He also advised me that both faces were "B" grade finish which gives a good finished product with minimal sanding. The finishes are graded from A to D and cheaper plywoods have a lower quality finish on 1 side compared to the other.
The only thing that has me a little sceptical as to whether or not it is the right stuff is the price:-
$63 for a 2400 x 1200 sheet of 9mm and $72 for a sheet of 2400 x 1200 sheet of 12mm. If it is good quality stuff thats an absolute bargain.
The place is at Brookvale in Sydney and I hope to get down and have a look at it within the next couple of weeks, as I am in the planning stages of building a 10"/F5 truss scope for myself and a 14"/f6 truss scope for Andrew Murrell.
When I ascertain 1st hand that it's good quality stuff and suitable for scope building, I will let you all know where it is.
CS-John B
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