Plywood Woes!

[tnott]

I used Pacific Birch Ply for the 16" TriDob and Gaboon for the 10" and the current 22". Both good, but the Gaboon is more attractive to finish and about 20% lighter. Both from Duck Flat Wooden Boats in Mt. Barker SA.

[stephenb (Stephen)]

For what it's worth, I used A-A Grade Hoop Pine from Construction Plywoods in Airport West, Victoria. It was approximately $200 for a 2400x1200 sheet. The outer ply layers are perfect and it does the job as far as I'm concerned.

[tnott]

Forgot to say - both Pacific Birch and Gaboon are hardwood core, hardwood veneer. This is more important the larger the scope, when you need to overcome the exponentially increasing weight and flexure problems. If you double the aperture you have the potential for 32X the flexure, so careful design and selection of materials is more important.