Homebrew PCBs

Phil wrote:
> 
> I've have very bad luck with several of the fish tank bubblers and
> CuCl (air stone is one product name).  They fell apart in the CuCl
> after around 6-8 hrs exposure.
> 

I've had the same experience. Nylon is the culprit. I've heard before 
that big bubbles produce more a agitation. This is where you need more 
air than conventional home fish tank air pump. I've looked around for 
such pumps and found some hydroponic stores sell large pumps, and then 
there are places that sell pumps for outdoor fish ponds and even home 
sewage treatment. There are high volume air pumps that are not too 
expensive. These cheaper high volume pumps are a bit louder and shorter 
life span, but that is unimportant for etching.

Adam