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WORLDWIDE Chapter 149 Message Board Forum Index » Want lists » Plating
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Plating
PostPosted: Tue Jul 21, 2015 7:54 am Reply with quote
darrah
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Joined: 19 Jul 2007
Posts: 4197
Location: Houston, TX




I am beginning research on what type of gold plating system I should get for Xmas this year. I always buy what the wife gets me. Cool I have been researching those made by Becker Industries but just can't get enough information to determine differences other than voltage and current control. I am trying to determine what is really critical for good plating while keeping cost reasonable. I would really like to hear from anyone that has experience in this area and what would be recommended. Thanks, DA

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PostPosted: Tue Jul 21, 2015 9:49 am Reply with quote
Neilywatch
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Joined: 16 Oct 2010
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Cleanliness is the most critical element in plating.

Most plating Kits are the same. Some of the solutions are different in the sense some contain cyanide and some don't.

The problem with todays plating is that they don't duplicate the same color as the originals due to chemical replacements and safety.

I have two plating kits that I don't use because of all this.

My friend bought a better system to plate bracelets for watches but because of the metal content of the bracelets - you have to plate them in copper first, then gold. The plating never held and he was getting returns. He gave up in frustration.

Not sure what else to add, Darrah?

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PostPosted: Tue Jul 21, 2015 5:32 pm Reply with quote
darrah
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Location: Houston, TX




Thanks Neil. I new that duplicating the same gold color is almost impossible but most of my work would be on small screws, micro-adjusts, etc. The cyanide method give a more true color but is dangerous and don't want to deal with that issue. It seems weird that your friends plating would come off. Prep must have had something to do with it. thanks again.

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PostPosted: Tue Jul 21, 2015 7:00 pm Reply with quote
StephanG
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Joined: 06 Nov 2008
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Location: Melbourne Australia




I had a small plating machine given to me but found the hardest thing is to source the chemicals so I would work backwards and get that end figured out first and then go for the machine that goes best with the stuff you want to use. The supplies are about but hard to get in small quantities and the post office is not keen on them so you might have to go get the stuff.

There are also 2 systems to use.

The traditional way with a bath you immerse the object in.
Mine is one of those.

The other way is a sort of brush or pad or whatever to apply the chemicals.
Widely used on car bumpers and bathroom taps.

I gave up on the gold but have had some success nickle plating.

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PostPosted: Tue Jul 21, 2015 7:35 pm Reply with quote
Neilywatch
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I need to add that the problem with nickel plating is that the nickel salt contains chromium, which is a known carcinogen.

Plating is tough, no matter what.

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PostPosted: Wed Jul 22, 2015 1:39 am Reply with quote
Ben_hutcherson
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Joined: 17 Feb 2010
Posts: 2323
Location: Frankfort, KY




Neilywatch wrote:
I need to add that the problem with nickel plating is that the nickel salt contains chromium, which is a known carcinogen.

Plating is tough, no matter what.


Most of the nickel salts I'm familiar with for nickel plating are nickel sulfates in some form or fashion.

In any case, hexavalent chromium is actually not super dangerous to handle with reasonable precautions. You should be wearing gloves(nitrile, not latex) when handling it and of course observe normal safety precautions like washing your hands after handling, not eating and/or drinking in the area, and being careful about splashes and spills.

The real issue comes down to safe and proper disposal, as hexavalent chromium(or chromium in any form, other than Crş) is dangerous stuff in the environment. And, unfortunately, most local "waste disposal" places are equipped to handle it.

I've done battle a couple of times with the head of the Department of Environmental Health and Safety over Chromic Acid(K2Cr2O7 in H2SO4) as she doesn't want us to use it but sometimes it's necessary. It's not the first fight I've fought with her, nor will it be the last Smile . She does still dispose of it, albeit not happily and constantly begs us to find an alternative. We do battle also over mercury thermometers and aqua regia Smile
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PostPosted: Wed Jul 22, 2015 5:09 am Reply with quote
StephanG
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Location: Melbourne Australia




I was able to befriend the owner of a local plating business who was willing to supply my very small needs as long as I bring the stuff beck to him when I am done.

Took him a picture of my machine and he was amazed how small it is.

Thinks it might have been for dental work.

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PostPosted: Wed Jul 22, 2015 7:16 am Reply with quote
darrah
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Location: Houston, TX




I really appreciate the info guys.

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Darrah Artzner
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Plating
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