If you can work out the logistics, saftery, etc. There are tubes one can buy from woodcraft called Hollowood. They are a plywood tube covered in exotic veneers. It would have to be sealed with epoxy and some 2oz glass would not hurt either. I think you could also lay up a glass tube over a pressurized plastic water or soda bottle, release pressure to get the bottle off.

If you get it figured out, take a picture and let us see. Bart
> I was thinking about building a knee tube for my Coho. Like to put a water
> bottle or handheld VHF Radio within handy reach under the front deck.

> My thoughts on fabricating a simple knee tube were:

> 1) Cut a foam core to shape then glass several layers of 6 oz cloth over
> it, then melt out the foam with solvent.

> 2) Make a shell out of 1/32 balsa with temporary formers, glass the
> outside, remove formers, glass the inside. Kind of like building a hull.

> In either case the knee tube shell with wood core or without would be
> glassed in place under the deck.

> Has anyone tried this to make a knee tube or other small compartment for
> their boat ?

> Chris

> Baton Rouge, La