Foam for increasing bouyancy

I remember somebody posted a site for buying foam pads to increase the bouyancy of your rig. Would someone with that info please post it again. I can't find it.

Thanks.

I think that was on DD

It was DD. Here is one such link.

What you need is a foam that is closed cell and has compressive strength. Boat coring materials have these qualities and are salt water resistant. Choose a heavier foam so that it has some impact resistance. I've used Divynicell and expanded PVC foam. I finish mine with 15 minute epoxy and microballoons (hobby shop) to give it additional impact toughness. Then I paint it black.

Herb,

Two months ago, in an attempt to emulate craig's suggestions, I ended up with my version of buoyancy arms using "local" material:

I went with a product called "Core Cell A". It was the material being used by a local ship builder. It comes in 1/2" sheets, very light, very durable. Recently, I put 25 shore dives on my strobe arm and did not see any noticeable deterioration. I did not finish mine, leaving the exterior as is. I used Devcon Two Ton Epoxy to glue sections together.

My rig (c 4040, Ike housing, pair DS 125's, 2 controllers, 1.25" dia. strobe arms) topside weighs @ 16 pounds. I measured it to be close to 4 pounds negatively buoyant in salt water. After installing the Core Cell components ( as photographed) the resulting negative buoyancy of the complete rig became a mere 13 ounces.

For more info:

http://www.digitaldiver.net/yabbse/index.p...id=5613;start=0