Curious When you say slow.
How long is that?
from what I gather I would say 1/2oz per 5-10 mins is about the average.
depending on factors like. agitation, bubbles,heat and the CuCl level.
You could always drop a test piece (1/2x1/2 pcb) in and time it. when done stick it along with the notes about its times and particulars. this way you can have some way of knowing what to expect in the future.
I do feel obligated to ask. when you said
"> I left mine bubbling over the winter. "
how long was that really for? Ive never left mine bubbling for more than an hour ... ever.
(the 1 hour period was a stress test and break in)
Sam
--- In Homebrew_PCBs@yahoogroups.com, <mbushroe@...> wrote:
>
> I left mine bubbling over the winter. It is now a dark green and very opaque. On the other hand, I have not etched a new board in quite some time, so I don't know if it has gotten better or worse. But before I left it bubbling, the fresh hydrogen peroxide and hydrochloric acid solution, even after heating in the microwave, was still very slow.
> Mike
>