> Also, the Press-n-Peel website details the step of applying a layer of > tape to the board after ironing to clean up the traces. Does anyone do > this? Is it neccesary, and does it make that big a difference? The blue stuff sometimes thickens traces too much, so I think that's what they are talking about. That must be a new tip from them, I've never done it. But I do inspect the board carefully and use an X-acto blade on things that look like trouble. > Oh, and one more thing...is it permissable to reuse ferric chloride? Absolutely. Use it until it gives up. The Radio Shack stuff is very weak, so you won't be able to reuse it very many times. It always works best when warm, like hot-tub temperature (130F). You can use a fishtank heater if you build an etching station, or just heat it in a double boiler or (dare I say it) microwave oven. Cheerful regards, Bob -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body