Homebrew PCBs

I can run an ABS plastic pipe from the cooler lid to a right angle
elbow, and then out through a hole in the basement window. How should
the pipe terminate at the exterior end? Will any HCl be evident at the
end of the pipe? (It would be at a level where a child could see and
touch it, and if it dripped it would be onto a concrete sidewalk.
SInce I rent I don't want to damage the sidewalk.)

Grant

--- In Homebrew_PCBs@yahoogroups.com, Russell Shaw <rjshaw@i...> wrote:
> grantfair2001 wrote:
> > I had been aerating my CuCl etchant with a small vacuum pump used as
> > an air source....
> 
> > The tools etc had a fine coating of what looked like rust on many
> > surfaces. I rinsed these with a rag soaked in a solution of sodium
> > bicarbonate and rinsed them off with a bit of water. A slight polish
> > with extremely fine emory took the rust off, but I will have lots of
> > this to do.
> > 
> > What is the best way to deal with this rust and any residual HCl?
> 
> HCl fumes make everything oxidize. About the only thing to do is vent
> it out doors, or bubble the exhaust thru a secondary tank of water.