Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, "RJ" <rj3819@...> wrote:
>
> Mixed it . not sure if its exactly 17% .. 
> But at a swimming pool supply place you can
> get 35% H2O2 .. and I diluted it with the 3%
> stuff you get in the store .. 
> 
> Randy
> 


I should look for some of that, it's quicker to use peroxide to recharge it once it turns to cupric chloride. The original mix of HCL + H2O2 is very fast at etching. The best PCBs I've made used the strongest mix I could make. Etched very quickly and there was zero pitting.