[PSUBS-MAILIST] Zinc coating

[Alec Smyth via Personal_Submersibles]

Hi Brian,

There's lots of dirty, noisy, or smelly jobs building a sub, but
sandblasting our little hulls - in particular the inside - has to be right
at the top of the list. Years ago I bought myself a sand blaster with the
intention of doing this job myself. Very bad idea. It was a complete pain,
especially recovering the sand to pass it back through, which required one
to pass it through a sieve to remove any kind of foreign particles that
would clog the nozzle. I had clogs pretty much all the time, sand
everywhere, and ended up taking the sub off to have someone with proper
facilities deal with it. I generally tight-fisted, but sand blasting is THE
job I don't mind outsourcing.

Best,

Alec

On Thu, Apr 30, 2015 at 9:25 PM, Brian Cox via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> All,
>
> Ok, I was going to take my pressure hull ( it's finished , BTW) down and
> have an outfit zinc coat it but now I'm thinking that I should spend that
> money on a heavy duty air compressor and a sand blaster and do it myself.
> Since I'm sure I will need to be recoating places where I'm doing thru
> hulls and such.  But my question is do I need to worry about the
> compatibility between the zinc coating and the epoxy that will on over the
> zinc ??   Should I put the zinc on the inside too ?   Are there different
> types of zinc coatings?
>
> Brian
>
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