: I'm about to order wood for my first kayak (Wood Duck 12) and due to the many
: underwater logs and stumps in my area, I was thinking about using thicker
: plywood. The plans call 4mm ply, but I am thinking about using 6mm. Is
: this a good idea and will 6mm ply bend as much as 4mm?
: thanks

Hi Danny,
Just taking the thickness difference and ignoring the ply number difference, 6mm ply would be over twice as stiff as 4mm. The extra ply's in 6mm add to that stiffness. A layer of glass on the bottom panels would be more effective and much easier to do.

Hope this helps,
Mike Savage
South West Cork