> I finally mustered the courage to start building a CLC Cape Charles but
> I'm faced with an odd problem. Instead of one sheet of 3mm and two sheets
> of 4mm okoume, I ended up with one sheet of 4mm and two sheet of 6mm (long
> story -- their mistake). This being my first crack at boat building, I'm
> inclined to do everything by the book. Hoiwever, I'm itching to get
> started and I'm not looking forward to the hassle of exchanging the
> plywood.

> Is there any reason why I couldn't use what I've got? What would the
> weight difference be? How would this affect the performance of the end
> product? Would I have to change the way the panels are stitched and taped?

> Thanks for any advice.

Use what you have. The boat will be slightly heavier. Make sure you use the 4mm for the deck. The 6mm would work for the sides and the bottom. Against the opions that you read, I built a CLC Mill Creek and I'm completeing a Pygmy Osprey triple out of construction grade exterior fir plywood. Yes, they are slightly heavier, but bullet proof. The Osprey's weight is on target with the 4mm okume version, however, I went light on the epoxy and glassing operations. Regardless of what you use, I recommend that you sheath the hull with a light (approx. 2.5 to 4 oz) cloth and epoxy. Hope this helps.

wd