Homebrew PCBs

> 
> I think I am spoiled,
> 
> The first batch of boards I had were of some other substrate and 
the 
> copper pealed off easily.
> 
> I can get muriatic acid from the hardware store, so that is easy 
> enough.
> 
> Hydrogen dioxide... I've seen that on the list before.  Seems I 
need 
> to scan the list for quality and sources.
> 
> IIRC, it is not the diluted stuff one buys to put on cuts.
> 


I DO use the 3% medical grade. It DOES work. Walmart sells it for 
less than $1 per quart so it's not expensive. Mix it 2 parts H2O2 to 
one part acid (32.25% acording to the bottle). 4 quarts of peroxide 
and 2 quarts of acid make up a gallon and a half and costs about $6. 
$4 per gallon is a LOT cheaper than I can buy Ferric.

For the most part I use a bubbler to rejuvinate it. I wanted a 
bubbler to help speed up the etch anyway, so I just run it for a few 
hours before I need to etch. (usualy I turn it on the night before) 

Works fine for me.
-Denny