[PSUBS-MAILIST] Zinc coating

Fri May 1 23:31:55 EDT 2015

The main unit I use will go through a 5 gallon bucket of coal slag in about 2-3 minutes. It blasts as fast as you can move. The orface is about 1/2" and never clogs, so it is easy to reuse media.
-Scott Waters

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-------- Original message --------
From: hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> 
Date:05/01/2015  7:38 PM  (GMT-06:00) 
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
Cc:  
Subject: Re: [PSUBS-MAILIST] Zinc coating 

Brian,
What size compressor did you buy?  Sand blasting is a dirty job, but I love it, I find it relaxing.  Get yourself a good hood that has an air feed.  I did not know that silica sand is dangerous, that is all I use but I wear heavy coveralls and gloves.  My system is 80 cfm at 80 psi and that seems plenty.  I never reuse my sand because it looses bite and like Alec says, it will plug your tip, but not until you have crawled inside a tight space and got comfortable :-)
Hank--------------------------------------------
On Fri, 5/1/15, Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

Subject: Re: [PSUBS-MAILIST] Zinc coating
To: "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
Received: Friday, May 1, 2015, 7:55 PM

I
guess I should blast my viewports as well.   Gee I made
them so smooth ! Brian

---
personal_submersibles at psubs.org wrote:

From: "swaters at waters-ks.com via
Personal_Submersibles"
<personal_submersibles at psubs.org>
To:
Personal Submersibles General Discussion
<personal_submersibles at psubs.org>
Subject: Re: [PSUBS-MAILIST] Zinc coating
Date: Thu, 30 Apr 2015 20:38:21 -0500

Not sure about yhe
zinc coating. I used Macropoxy as the first coat and High
solid poly as my second coat. I don't know if that
helps, but it is what I
did.Thanks,Scott Waters

Sent from my
U.S. Cellular® Smartphone

-------- Original message
--------
From: Brian Cox via
Personal_Submersibles
<personal_submersibles at psubs.org> 
Date:04/30/2015  8:25 PM  (GMT-06:00) 
To: PSubs
<personal_submersibles at psubs.org> 
Cc:

Subject: [PSUBS-MAILIST] Zinc coating 

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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