[PSUBS-MAILIST] electro plating

hank pronk via Personal_Submersibles personal_submersibles at psubs.org
Thu Dec 31 08:26:21 EST 2015


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 RegardsJames    
On 31 December 2015 at 02:27, Brian Cox via Personal_Submersibles <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 wrote:

From: hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
To: Personal Submersibles General Discussion <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 corkHank 

    On Wednesday, December 30, 2015 3:29 PM, Brian Cox via Personal_Submersibles <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 wrote:

From: Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org>
To: "Personal Submersibles General Discussion" <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 wrote:

From: hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
To: Personal Submersibles General Discussion <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> wrote:
 

 You could lay some stainless weld over the entire area and then machine it flat. Brian Cox

--- personal_submersibles at psubs.org wrote:

From: hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
To: Personal Submersibles General Discussion <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_______________________________________________Personal_Submersibles mailing listPersonal_Submersibles at psubs.orghttp://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
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