Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

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