[PSUBS-MAILIST] launch details

[Private via Personal_Submersibles]

Hi Brian,

Look up a coating called "Gluvit." It's a two part epoxy intended to seal pinhole or hairline holes in boat hulls. I've never had to use it, but it sounds like something that might be targetted to this issue.

BTW that's an amazing amount of freeboard in the photos!

Best,
Alec

> On Nov 3, 2017, at 8:12 PM, Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> So, I have this chronic, pin hole leak problem which has been hard to deal with.  I've been kind off putting off solving the problem because I figured that I could live with it for the time being.  But what it is is that around the perimeter of where I mated the two ferro-cement hulls together , kind of a clam shell, I'm having these tiny leaks .  I figured while I was observing the sub, that it was taking about an hour to for the sub to go down about 12 inches, unfortunately I was rudely interrupted by the unhelpful HP.  Because I was thinking that the leaks would probably stop after the water level got above that area.  So I have to fix that issue once and for all , so I'm going to yank everything apart and turn that ferro-cement hull on it's side.  Then cut large access holes in between the ribs at the bottom of the hull.  Then with access to the mated area I can fill seal that region.  Maybe even fiberglass epoxy it.  Removing holes in between the ribs will not significantly effect the structure, for the purpose that is intended.   But that means I won't be able to pressurize that cavity anymore, which  was handy when looking for leeks, I could just do the bubble test.  I think the trade off will be worth it, but turning that thing on it's side will be a project!
>  
> Brian
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