...and then goes into 'trickle charge' where a small current flows to keep the copper on the electrode ...or a servo/motor pulls the electrode out ...and makes the tea.... Kevin ----- Original Message ----- From: "Bob Ammerman" To: Sent: Thursday, March 29, 2001 1:59 PM Subject: Re: [OT]:PCB chemistry > > Thanks Alan! Does the resistance change when the > > copper is completely removed from solution? Maybe > > you could build a automatic circuit (using a PIC??) > > that removes all the copper then switches itself > > off. > > -Roman > > Yeah, but then the etchant would immediately start working away on the > copper electrode! > > Bob Ammerman > RAm Systems > (contract development of high performance, high function, low-level > software) > > -- > http://www.piclist.com hint: The list server can filter out subtopics > (like ads or off topics) for you. See http://www.piclist.com/#topics > > > -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics