Homebrew PCBs

On Tue, 03 Oct 2006 14:42:16 +0200, leon_heller  
<leon.heller@...> wrote:

> I was curious about the stuff sold for removing ferric chloride
> stains, so I looked up the Mega Electronics data sheet on the stuff
> they sell (its made by Bungard). Its simply oxalic acid crystals and
> rubbing with rhubarb leaves should work just as well, they contain
> oxalic acid. Its quite poisonous, BTW.
> Ill see if I can buy some oxalic acid, it should be cheaper than the
> stuff sold by Mega.
> Leon
>


I am told a little hydrochloric acid does the job too, but haven't tried  
myself.
Prior to learning that i tried to remove a FeCl stain on a pair of jeans,  
attempted to do it with by rubbing a chlorine tablet from the pool on it.  
I got a small ferric chloride stain in a huge bleached spot, and one more  
pair of "bad" jeans for dirty work....

I am glad i don't need to deal with the bottled stain from hell any more.

ST