Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, Mark Lerman <mlerman@...> wrote:
>
> As I understand it, the H2O2 is used to provide oxygen to the HCl, 
> but using 3% peroxide slows it down because of dilution of the 
> HCl.  Has anyone tried just bubbling some oxygen through the HCl? Or 
> is this just too dangerous to contemplate?? Thought I'd ask before 
> trying. <smile>
> 
> Mark
>
Air Bubbling works great.  I don't put peroxide in it anymore.  Sometimes add some HCL from time to time and sometime leave the lid off to reduce the level sometimes.  It does take a while for Air Bubbling to get it back to the nice bright Green.  I kept my tank on the back porch.  It etchs fine even when it was Cold outside.

Ben