> and-light-bulb end of things. Getting professional results > requires some complex solutions, involving metallurgy, > electro-chemistry and a witches brew of acids, cyanides, > hydroxides, sulphates and so on. Just as an electronic Correct, and one way to get them is to buy a set of chemicals ready made (powder + liquids + instructions), at least until some experience is gained. Re-inventing the wheel is for real chemists (the kind who enjoy cleaning the black goo that shouldn't be there and doesn't come off with anything when finished). ;-) Peter -- 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