Anyone have any experience brush electroplating rather large metal pieces with a precious metal, like say silver or gold, onto a 1" diameter base metal pipe a few feet long? Low-voltage power supply requirements in the 10s or 100s of amps for a piece that size?
Asking for a friend (Donald Trump)
Ughh, I was going to say something, (more) but I'm put off by the DT jab.
George H.
Crap, can't resist - if you are talking about a DT jab shouldn't it be a wooden stake?
(running for cover)
John ;-#)#
Never done brush electroplating but have read about it. My understanding is that the plating happens in the small puddle provided by the wet brush, so it really doesn't matter how big the work piece is, the current will be in the say 0.1 to 5 amp range since that provides the proper current density over the small spot of brush contact.
-- Regards, Carl Ijames
No! As usual, it would have been best to say nothing. sorry GH
If you scan NY Times articles and skip any with "Trump" there's almost nothing left.
If you switch on the car radio to NPR, you will hear "Trump" with a median delay of about 10 seconds.
Some day, after his second term is over, they will have to spend money to hire actual reporters.
-- John Larkin Highland Technology, Inc lunatic fringe electronics
Thought his fans were supposed to be thick-skinned. Waaaaaah
I allowed one of my half-brothers who voted for him to attend his father's funeral even though he didn't contribute to the cost, I'm extremely generous to the Trump supporters I know personally.
Our father, that is, to clarify the grammar
The lavatory faucets and seat belt buckles on Trump Air were gold-plated (or something that looked a lot like gold!)
In seriousness he does a lot of attention-getting stuff and then you wonder why he gets a lot of attention.
It's the dude-equivalent of going out to the Outback Steakhouse in a wet T-shirt and thong and then huffing "It was disgusting they were all staring at my t*ts. Men are pigs"
Well if I attempt to experiment I think I'll experiment with silver on a small work-piece first.
There may be some demonstrations on the correspondence-learning tool of the 21st century, YouTube
Some day, after Trump is ignominiously booted out of office for shameless attention seeking, reporters will have over things to talk about.
-- Bill Sloman, Sydney
Your problems will be more with obtaining the electroplating solution and using it safely than with the electrical supply - depending on the size of the brush a few amps will probably be all that is needed.
Working with a cyanide complex precious metal plating solution in anything less than well controlled conditions and good ventilation will be seriously life shortening. The current requirement will be for the area of contact of the brush with the piece.
Precious metal plating is best left to experts it isn't DIY stuff. TBH I doubt in the present climate you would be able to buy the ingredients.
I used to know a manager at an electro plating works very well. The operators on the floor were cavalier about handling cyanide eggs out of drums and would pick them up bare handed to toss into the plating bath when needed. They used to do this as a show off trick in front of visiting VIPs too until one of the visitors dropped down dead of a heart attack. There was a postmortem and high profile cyanide death investigation to follow. It would never be allowed today.
The inquest determined that he wasn't *poisoned* by the cyanide but killed by his own fear of the stuff triggering a latent heart condition.
You might be able to do silver plating with the physical bath ammoniacal plating solution with no electrolysis but I have no idea how well it would take on a base metal. I have only ever done it onto glass. Even with that chemistry if you get it slightly wrong you can end up with crystals of unstable fulminate which detonate when dry and prodded.
Your best bet is send it off to a plating works that specialises in precious metal plating onto base metal. Preparing the surface to take a reliable metal plating is in itself a non-trivial task. eg
-- Regards, Martin Brown
Why would you think that the size of the object being plated affects the current requirements?
Dan
The news branches seem to be rapidly declining. A long in depth news story is worth almost nothing. (It generates a few hours of headlines... maybe, and then is gone.) Much better is a quick 'hit' piece on someone on the 'other side'. News is now entertainment, a stories success has nothing to do with truth, but how many clicks it generates. So they give people what they want.
From my view (liberal weenie) it started with Fox news, but I would listen to an argument that said Fox was just a reaction to the bias of the other media outlets. Regardless it's all rotten. I guess what I miss most is some rational voice on the left calling it for what it is, hooey. The right still seems to have some rational voices.
This is an OK piece from National Review,
George H.
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