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: Hi Henk, I'm just laminating two 1 x 4 redwood boards to carve out a
: Greenland Paddle. I figured laminating two boards would make it stiffer
: and stronger than just using a 2x4. I considered putting some fiberglass
: or carbon fiber cloth in between but didn't find anything on the net about
: using cloth between layers.
: Will

Hi Will,
Fibreglass works best in tension. Having it in the middle of a laminate means it is in the area of least movement in bending, so it contributes nothing to rigidity.
On the outside, any bending force has to stretch the FG on the outside of the bend, which is where FG works best.
It's not so good on compression but the wood beneath supplies compression resistance.

Mike Savage
South West Cork