Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, John Michaud <greyfox1143@...> 
wrote:
>
> Thanks - I'm in the Portland OR area - and ya the manager of that 
Radio Shack said check on Tuesday when they get there stock 
shipments.  But I had the impression they may not carry the product 
anymore.  Also I believe it was $6.99 for 16 oz
> 
> Thanks for the links everyone -
> 
> John
> 
If your near Beaverton stop in at Falk hardware on Cedar hills and 
pick up a gallon of Hydrochloric acid ~37% sold under the name 
Muratic acid  for $5. Then stop off at any drug store and buy a quart 
of 3% Hydrogen Peroxide for about $1. Add 2 parts Hydrogen peroxide 
to your etch tank first, then add 1 part Hydrocloric Acid last. You 
will not need to heat it, it creates it own, just add an air bubbler. 
This will etch your board in about 3 minutes. Its way CLEANER, 
CHEAPER, and FASTER than the brown stuff from Radio shack.

Before everyone jumps all over me. Hydrochloric acid is used by brick 
layers to clean brick work, and to clean concrete driveways, and its 
also used adjust pH in swimming pools. Yes, you have to be carefull 
because it is a STRONG acid. Wear eye and skin protection, and use in 
well ventilated area, you should be doing that anyway with the Ferric 
Chloride.

Once you give it a try, you'll never go back. 

Ron