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Restoring hardware

Posted: Sat Sep 08, 2012 6:12 am
by Enemy Ace
Has anyone replated their hardware or does everyone send it out? Yellow Cad plate is inaccurate for the T-6, hardware should be silver. Has anyone prepped and replated their hardware? I would like to do this and some guidance would be very helpful.

Re: Restoring hardware

Posted: Sat Sep 08, 2012 8:00 am
by Stoney
In 1984 I used a Co. in Oakland, CA that did the cad 1 plating, don't know if they are still there.

Re: Restoring hardware

Posted: Sat Sep 08, 2012 9:12 am
by bdk
I have in the past. Most of the plating businesses folded up in SoCal due to the environmental regulations and the decline in aerospace. It is easier for me to just buy new stuff and live with the gold cad. Of course I'm not doing a 100 point restoration with cotton insulated wire either.

Any place that does the Type II, should be able to do the type I. My understanding is that the Type II is just a secondary process done over the Type I.

Re: Restoring hardware

Posted: Sat Sep 08, 2012 10:15 am
by Chunks
This has been discussed somewhat recently here, I think Greg Vallero mentioned a company in Dallas, TX that was doing it. You may try a search, I'll try to find it later...

Chunks

Re: Restoring hardware

Posted: Sat Sep 08, 2012 10:53 am
by shrike
The gold finish is indeed a secondary process. Getting the silver finish is just a matter of asking for it that way.
We have about 100lbs of hardware replated every month using two different places. PM me for details.

Re: Restoring hardware

Posted: Sat Sep 08, 2012 3:53 pm
by Enemy Ace
I was actually hoping someone had made a small plating setup that I could replicate so that I could re plate small batches of parts in my hangar as I work on different things.
I believe some old timer gunsmiths have small plating benches that they use to do small parts but I don't know about Cad plating, I think they normally use silver and nickel.
I have purchased some books on how to do plating, Lindsay's metal working books are very helpful, but I am more of a visual learner, not enough pictures for me. :D

Re: Restoring hardware

Posted: Sat Sep 08, 2012 4:20 pm
by bdk
I think that Vultures Row has set up their own plating tanks and baking ovens.

Re: Restoring hardware

Posted: Sat Sep 08, 2012 7:41 pm
by shrike
Eastwood and Brownell's both have brush-plating set ups, but Cadmium isn't an option,

Re: Restoring hardware

Posted: Sat Sep 08, 2012 10:15 pm
by bdk
There is a MIL-SPEC that needs to be followed regarding baking after plating to avoid hydrogen embrittlement. Make sure you understand that before you begin!

Re: Restoring hardware

Posted: Sat Sep 08, 2012 10:35 pm
by The Inspector
And don't forget PPE if you're going to futz around with Cadmium! The stuff is deadly poisonous and like most nasty chemicals we use and are around all the time, they are trans dermal so wear gloves other than latex or surgical as they are porous. A serious respirator is a necessity too (not a party mask, they are absolutely worthless!) as a guard against inhaling the fumes during the plating process which will also kill you oh, by the way! It's a good idea to wash & scrub the heck out of your hands after handling newly plated stuff.

We tried stylus cad plating a couple times @ BFG/TRAMCO but had, at best so-so results.

Re: Restoring hardware

Posted: Sat Sep 08, 2012 11:58 pm
by bdk
Inspector, you really know how to ruin a guy's fun. Next you'll be telling me to stop eating old white paint chips.

Re: Restoring hardware

Posted: Mon Oct 08, 2012 2:37 am
by Matt Gunsch
some of the enjoyable things you need to do silver cad is muratic acid, cadnium anodes, and liquid cyanide, the last 2 are not user friendly, and if you mix the first and 3rd, you just created your own personal gas chamber.

Re: Restoring hardware

Posted: Mon Dec 31, 2012 2:58 pm
by Deuelly
I use "The Works" drain cleaner. Slosh your hardware around in it for about two minutes and rinse. It removes the yellow dichromate coating on the cad. I've done batches of a couple hundred bolts in plastic drink bottles in about ten minutes.

Re: Restoring hardware

Posted: Mon Jan 07, 2013 3:27 pm
by RobC
Deuelly, How do you do your fiberlock nuts? You can't put them in that stuff, can you?

Re: Restoring hardware

Posted: Wed Jan 30, 2013 11:07 am
by Deuelly
RobC, I've done the newer fiberlocks with the plastic but never the older one's with the actual fiber, Garlock type material.