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.