coosa board

[Russ Pagels]

Is coosa board a good product to use for rudder tables? I know I read something here about this product but can't find it on search. thanks Russ

[CaptPatrick]

Coosa will be fine if you heavily reinforce it.

This is the way I'd would do it:

2 pcs of 1/2" Coosa laminated together with 1208 biaxle fabric, (45/45 weave).

Laminate both exterior faces with 1208, lightly sand, round over the corners, and cover the whole thing with 1 1/2 oz chopped strand mat. Sand that to a smooth surface and add a coat of resin to fill in pin holes.

Ready to paint, gelcoat, or finish as I like. I'd do it all in polyester resin to that point...

[Russ Pagels]

Pat thanks for the come back. just trying to cover all bases with the new boat...Russ

[Bertramp]

Can it also be used for the bulkhead just aft of engines and the cockpit deck supports ?

[CaptPatrick]

The bulkhead, yes. That's what I used on the current B31.

Structural supports, yeah maybe if you designed 'em right and glassed 'em up good. But what I used was 2" structural square fiberglass tubing, 1/8" wall thickness, for the vertical supports. The horizontal, (fore to aft), I constructed 1/2" plywood I beams, epoxy glassed over and capped with structural fiberglass channel.

The structural fiberglass was procured from McMaster-Carr

[Charlie J]

mcmaster carr, used them awhile back for a certain size spanner wrench, orderd a doz, was at the job in 2 days, excelent co.

[Major]

I also have to chime in on mcmaster carr. Every time ive ordered from them ive had the order in 1 or 2 days with standard shipping. They have been great in my experience. I just wish they would let a small guy like me have a catalog.

[Bertramp]

thanks for the info ... and McMaster looks great

[Dug]

McMaster is very good. We use them often. Work is allowed to have an account there as opposed to the $%ck@#s at Kellogg.

You may not need a catalog as they have a great website.

If you need one, I have tons, just give me an address.

They being an industrial supply house, and we being industrial, its a useful resource! That and MSC, and many others. All depends on what you are looking for!

D

[Marlin]

I fabed mine out of 2 pieces of 3/4 x5" coosa board glued together with eooxy, I screwed a piece of 3/4x 5" and glued it as a top/ tee section. for the uprights , 3/4 x5" going from hull to the underside of the tee /top section and laminated a piece on the inboard side that basically set on top of the longitudinal stringer and continued up to the underside of that tee section, refastened with carriage bolts, gave everything a coat of Sherwin Williams White self leveling epoxy ,easy to fasten the decking back down on to

[Rocky]

McMaster Carr has 26 density Coosa board too! They are great.

[Tangier]

Just completed a rudder shelf w. coosa-

Looks great-

How do you post pics?

Thanks,

[CaptPatrick]

How do you post pics?

Top of General Discussion Page -- 16 Jan 2007 ::: Announcement: How To Post Images and Links

[Rocky]

Capt Pat, do you have to use epoxy/mat on the coosa board surfaces(for deck hatches),or can you just apply nonskid and finish over existing board, and why?

[CaptPatrick]

I know of one guy in Palm Beach, (actually the guy that put me onto the Coosa Board type product almost 8 years ago), that doesn't glass over it. Just fills, sands, primes and paints...

But for me, I prefer to glass over it. A large hatch or unsupported area certainly needs glass both sides to insure enough composite strength.

[Rocky]

Thanks Capt., will glass over then. Damn, thought I had a quick little project there!

[Marlin]

coosa is extremely soft on dents easily, some of the commercial boats tried it and eventually recovered the deck with 1/2 coosa and a layer of cloth

[Rocky]

Marlin yes, I did notice that it is very soft too. Tamera at Coosa told me there is one boat manufacture that uses only 1/2" and not glassed! That seems like a stretch to me, literally.