Well, I got about half a pint of HCl from a friend with a pool (I could
only buy 2 gallons minimum) and made ~150ml of etchant (100ml of 3%
H202, 50ml of 31.5% HCl) and it worked like a charm, what a difference
new etchant makes, my tired old FeCl would have taken 20+ minutes, this
took 5-10!
I have some questions...
This appeared to be exothermic (it made it's own heat) will this stop?
What is causing it (I think it's the reaction with the H202)? Will it
produce heat next time?
There are bubbles in my storage container (I didn't aerate), what are
they? Will they eventually explode the bottle if I don't vent them off?
It's in a pint bottle that usually contains water.
Why did my latex gloves turn yellow where they got etchant on them?
Other than those questions I am extremely happy with the etchant, it was
cool to see it turn green, I was also watching it eat the copper off the
board.
Thanks to Denny for posting the recipe and for others answering my
pre-etch questions...
I will be upsizing to a ceriel container, but right now I don't do
enough boards, or big enough to warrant keeping a gallon of etchant
around.
--
Anthony Toft <
toftat@...>
I'm Anton, and I approve this message