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Acid Bath


Dan Bubb wrote:

>  I'm dubious about acid dipping though. How do they rinse off the
> acid? If any is left behind you'll have a corrosion problem, 
That's what I have heard also. Acid gets into seams and pockets and 
doesn't rinse off properly.  The acid keeps etching.

I understand that acid dipping is almost extinct in Calif due to 
environmental regulations. Other states may not be far behind. That 
generally drives the price up.

There is a website relating to restoring old vehicles and it has photos 
of an old rusted truck chassis being "derusted". You create a tub filled 
with a borax mixture and put the item in it. Attach "electrodes" (rebar) 
which are attached to a battery charger and let it soak for a while. (A 
long while I guess.) It sounds wacky but it seems to work. This guy 
built a wooden frame and plastic sheets to make what was essentially a 
swimming pool.

Oh heck, let me see if I can find the link. It has been posted here before.

http://www.davidbradley.net/ERR.html

(Additional links here.)

http://antique-engines.com/electrol.asp

Chris


if any
> rinse water is left behind you'll have a corrosion problem. 
> Personally, I'd media blast it. Sand blasting is not appropriate for
> the light sheet metal of a car body, it will warp and distort it. It
> needs to be either glass bead blasted or walnut shell blasted at an
> appropriately low pressure to avoid warpage. Make sure you find
> somebody that's experienced should you decide this route. Dan
> 
> From: "William Yeckel (Lexmark International)"
> <b-wiyeck@microsoft.com> Sent: Monday, September 25, 2006 12:00 PM 
> Subject: Acid Bath
> 
> 
> Hello folks I just bought a 1980 S again after not owning a rocco for
>  13! Years.  But, as is the case for most VWs this age it has rust
> all over the frickin place.  What I would really love to do is take
> the whole thing apart and give the body an acid bath, does anyone
> know how much something like that costs?  Is it a ton of work?
> 
> 
> 
> Thanks
> 
> 
> 
> -Bill
> 
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> 
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