Homebrew PCBs

One thing I noticed years ago with this was that the catalyst ate through
the Sanford Sharpie ink I was loading my plotter points with. Without the
catalyst, it was fine, but took forever to etch.

Mike Nash

----- Original Message ----- 
From: "Rick C."
Sent: Monday, March 22, 2004 6:24 AM
Subject: Re: [Homebrew_PCBs] Re: Sodium Persulfate?


> I have made over 10,000 home made boards in my lifetime and I speak from
> experience. The crystal power will keep indefinitely. I have never had a
> problem storing the powder. I bought a 5 gallon bucket of A.P. from
> Kepro. I took a few plastic containers and filled them for smaller
> storage. Some were open, some were tightly sealed. Never had a problem
> with any of them. It is the best, cleanest, and safest to use. I used to
> use FeCl in earlier days. I will never touch that stuff again. It stains
> everything it comes in contact with, splashes are hard to control, it
> eats its way theough clothes, and storing and disposal is harder.
> Rick
> http://www.pic101.com/pcb
>
> "Rick C." wrote:
>
> >  The crystals unmixed will keep indefinitely.