[vcf-midatlantic] gold fing-ers
coreyvcf at gmail.com
Fri Apr 20 06:23:48 EDT 2018
There is a company out there that produced a rechargeable gold plating pen for about $50 to $75 called the wizard pro. They also have a cheap disposable version that can be had for about $20. the real cost is the plating solution. That can range from $75 and up.
I use mine all the time to clean vintage “solder” slips when I’m fixing vintage stuff and to fix worn connector plating. Trick is to not contaminate your solution so it lasts and warm the solution a bit before plating. Otherwise pretty easy. I even gold plated my 11 year olds Timex watch in some spots so it matches the look of my vintage hyperaqualand dive watch so we have father and son dive watches. :-)
If you want to try it out let me know I can bring it to one of the workshops, just not the next one coming up, I have a lacrosse thing that weekend.
> On Apr 19, 2018, at 5:38 PM, Herb Johnson via vcf-midatlantic <vcf-midatlantic at lists.vintagecomputerfederation.org> wrote:
> So, I'm obtaining a recently-made PC board, which was produced by some PC board house from Gerber files, the usual sort of small-run hobby project. This particular board, was with ENIG plating on board and fingers. This means, a micron-thick plating of gold over 150-200 microns of nickel, mostly for better soldering and copper protection. But that also "covers" the edge-connector fingers, they are not heavier gold.
> What's out there, for adding gold to those fingers? There's a good number of them, not just a dozen or two. I"m bothering to ask the question here, because it's a "vintage repair" problem also. A solution for one or two fingers, is a solution for many. Or, tell me "nickel isn't so bad, don't insert and remove it every day, you'll be fine".
> No, I won't spend $300, $600 for a gold-plating electro-pen system. If someone has that and wants to give me a quote, I'm all ears, tell me how many microns you'll plate. No, I won't mix up cyanide solutions, not likely to use nitric acid; it's outside my experiences and one "oops" could really ruin my day. I don't expect to rub gold-leaf on fingers and glue them down, that won't last. I may well go to some PC board shop and ask them for a quote, maybe someone has done that.
> So - what do people here know-of, from repair experiences or their own experiences? I have looked around the Web, there's means of doing these things, but it's hard to judge them "cold". And of course, it's hard to search on "hobbyist covering PCB edge connector with gold", there's many people selling products or showing how they mess with aqua regia or coat quarters with microns of gold.
> Herb "Goldfinger" Johnson
> Herbert R. Johnson, New Jersey in the USA
> http://www.retrotechnology.com OR .net
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