Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, "Stefan Trethan"
<stefan_trethan@g...> wrote:
> On Tue, 06 Sep 2005 08:52:20 +0200, Phil <phil1960us@y...> wrote:
> 
> > By the way, I just added a new heater to my tank and did 6 pcbs.  I
> > got 5 minute etches on 1 oz, ds boards (2 at a time) with a not so
> > fresh solution of AP at 120 F.  not bad at all.
> 
> 
> yea, but still, what do you do with it when the AP is spent?
> 
> ST

Put it in a jar, place jar on hotplate on low and let it evaporate
down to a pretty blue mass of crystals.  Dump crystals into a storage
jar and then take it to a household/toxic waste event that happens
every 3 months or so.  I've only done this once - it takes about 2
years to fill the storage jar at the rate I'm going.

To your point that disposal is an issue that should be factored in -
yes, I agree it's very attractive to never dispose.  If I were doing
hundreds of board year, I would have a different point of view.  Right
now, it is still less work for me to properly dispose AP than to
regenerate CuCl.