[PSUBS-MAILIST] electro plating

Thu Dec 31 08:43:08 EST 2015

There might be an easier way. Some time ago a company sold an 
electroplating kit in which the workpiece did not have to be submerged 
in a container of electrolyte. Instead, the electrolyte was carried on a 
metal brush which was one of the electrodes, and simply plated over from 
the brush to the workpiece. This was primarily for retouching old 
plating jobs, like re-chroming a scratch on a bumper, but...

Might be worth a try.

Marc

On 12/31/2015 9:26 PM, hank pronk via Personal_Submersibles wrote:
> Brian,
> Gamma came with cork gaskets from the factory.   I remember how to
> electroplate from school science class.  Yes I will hang the sub upside
> down in a shallow vat with a solution for copper plating then clean and
> do the same for nickel.  There are youtube video's that show it real
> well.  My wife is watching for pre 1982 Canadian nickels at the bank
> because they are 99.97 percent pure nickel and will be the donor
> material for plating.
> I am not crome plating a Harly Davidson here, just looking for an easy
>   corrosion barrier, it will be fun to try :-)
> Hank
>
>
> On Thursday, December 31, 2015 3:01 AM, James Frankland via
> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>
> Hi Brian,
> Hank has already said it but the epdm doesn't seem so good.  I went with
> it because that's what it said in the Stachiw book.  I tested my dome to
> 60 meters (200 feet) and although I couldn't see it, the rubber had
> obviously extruded quite a lot due to the amount of silicone squeezed
> out.  Also, on my forward main tank, I have "windows" that are mounted
> on epdm seats.  They are not pressure windows, just covers but they
> still need to seal the main tank.  When I tighten the 8 bolts, the epdm
> extrudes maybe up to 5mm in places and I have to go around and trim it
> off.  And they leaked before I sealed them permanently with sikaflex.
> Hank tested the neoprene\cork blend I sent him and it tested out much
> better.  Im changing my dome mount to have that instead.
> Perhaps if you used a harder EPDM it might be ok?  The one I have is 70
> shore.
> I think a lot of people just sit the acrylic straight on the seat as
> well.  I would probably just do that now with my dome, but I cannot as
> the retaining ring seal is designed for the 1mm gasket underneath.  I am
> changing the seat for 1mm neoprene\cork gasket in a few weeks time.
> Kind Regards
> James
>
> On 31 December 2015 at 02:27, Brian Cox via Personal_Submersibles
> <personal_submersibles at psubs.org
> <mailto:personal_submersibles at psubs.org>> wrote:
>
>     I think you're the only one who uses cork,  Stachiw shows "rubber"
>     and I've seen many subs with rubber products,  I'll just have to
>     find a gnarly glue, I think silicone might work.    How do you know
>     how to do electroplating?   don't you have to dip the whole thing
>     into a solution and then run a current through it?
>     Brian
>
>     --- personal_submersibles at psubs.org
>     <mailto:personal_submersibles at psubs.org> wrote:
>
>     From: hank pronk via Personal_Submersibles
>     <personal_submersibles at psubs.org
>     <mailto:personal_submersibles at psubs.org>>
>     To: Personal Submersibles General Discussion
>     <personal_submersibles at psubs.org
>     <mailto:personal_submersibles at psubs.org>>
>     Subject: Re: [PSUBS-MAILIST] electro plating
>     Date: Wed, 30 Dec 2015 22:43:28 +0000 (UTC)
>
>     Brian,
>     I tested EPDM in my port test chamber with contact cement and it
>     extruded, rubber extrudes man.  Gamma has cork
>     Hank
>
>
>     On Wednesday, December 30, 2015 3:29 PM, Brian Cox via
>     Personal_Submersibles <personal_submersibles at psubs.org
>     <mailto:personal_submersibles at psubs.org>> wrote:
>
>
>     Oh, pg 237 :  To minimize lateral extrusion under compression they
>     should be securely bonded with contact cement to the bearing support
>     seat in the flange.
>     Brian Cox
>
>     --- personal_submersibles at psubs.org
>     <mailto:personal_submersibles at psubs.org> wrote:
>
>     From: Brian Cox via Personal_Submersibles
>     <personal_submersibles at psubs.org
>     <mailto:personal_submersibles at psubs.org>>
>     To: "Personal Submersibles General Discussion"
>     <personal_submersibles at psubs.org
>     <mailto:personal_submersibles at psubs.org>>
>     Subject: Re: [PSUBS-MAILIST] electro plating
>     Date: Wed, 30 Dec 2015 14:23:28 -0800
>
>     Hank,
>                   I don't remember anything in the Stachiw book about an
>     extruding problem, I'll have to check again.   They designate
>     various gasket material and thickness, and they call for neoprene,
>     and some others, I'm using EPDM.
>     Brian
>
>     --- personal_submersibles at psubs.org
>     <mailto:personal_submersibles at psubs.org> wrote:
>
>     From: hank pronk via Personal_Submersibles
>     <personal_submersibles at psubs.org
>     <mailto:personal_submersibles at psubs.org>>
>     To: Personal Submersibles General Discussion
>     <personal_submersibles at psubs.org
>     <mailto:personal_submersibles at psubs.org>>
>     Subject: Re: [PSUBS-MAILIST] electro plating
>     Date: Wed, 30 Dec 2015 21:51:36 +0000 (UTC)
>
>     Hi Brian,
>     Yes I could overlay weld ss, but that is a ton of work compared to
>     electroplating.
>     Yes your Gasket will extrude if you use rubber.  I just did some
>     compression testing for a Psub member with cork he supplied.  The
>     cork compresses .03 inch  and stays compressed and does not extrude.
>        I tested the cork material to 1,555 psi.
>     Hank
>
>
>     On Wednesday, December 30, 2015 11:52 AM, Brian Cox via
>     Personal_Submersibles <personal_submersibles at psubs.org
>     <mailto:personal_submersibles at psubs.org>> wrote:
>
>
>     You could lay some stainless weld over the entire area and then
>     machine it flat.
>     Brian Cox
>
>     --- personal_submersibles at psubs.org
>     <mailto:personal_submersibles at psubs.org> wrote:
>
>     From: hank pronk via Personal_Submersibles
>     <personal_submersibles at psubs.org
>     <mailto:personal_submersibles at psubs.org>>
>     To: Personal Submersibles General Discussion
>     <personal_submersibles at psubs.org
>     <mailto:personal_submersibles at psubs.org>>
>     Subject: [PSUBS-MAILIST] electro plating
>     Date: Wed, 30 Dec 2015 13:45:03 +0000 (UTC)
>
>     Hi All,
>     Has anyone looked at electro plating a hatch and land mating
>     surface.  That is my plan, first copper, then nickel.   I can do it
>     myself at home.
>     Hank
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