[PSUBS-MAILIST] Zinc coating

Fri May 1 13:05:31 EDT 2015

Just be sure to put down a hard floor and curtians to contain the media. Otherwise you'll spend a fortune in coalslag.

Thanks,
Scott Waters

Sent from my U.S. Cellular® Smartphone

-------- Original message --------
From: Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org> 
Date:05/01/2015  11:07 AM  (GMT-06:00) 
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
Cc:  
Subject: Re: [PSUBS-MAILIST] Zinc coating 

I have a big yard where I'm doing the work so mess is not an issue.

Brian

--- personal_submersibles at psubs.org wrote:

From: James Frankland 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: Fri, 1 May 2015 16:20:24 +0100

Im with Alec on this, its a hideous job.  Pay someone to do it.  I got my boat blasted inside and out for £300.  I wouldn't be able to buy all the proper stuff for anywhere near that.

I tried to get the bloke to do the blasting at home so I didn't have to move the sub, but he flatly refused to do it on account of the mess.  Even though id said I would curtain everything up.  So I had to crane the boat out and take it to his workshop.

BUT, sounds like Scott had success with the correct tools.  I must admit it would be nice to have ability to do it myself.  If I had a large shed spare I would probably consider it.  I like to be independent.

On 1 May 2015 at 14:14, Alec Smyth via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
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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