Hi Chris, Which chemicals are you talking about? The only two common ones I know of are Ferric Chloride and Ammonium Persulfate. Neither are any more toxic than common household chemicals as far as I know. Ferric Chloride is generally considered nasty because of its ability to stain things permanently, but as long as you dilute it sufficiently, it should be disposable in a municipal sewer system - indeed, it is sometimes used in wastewater treatment I think. I am less familiar with Ammonium Persulfate but I doubt that it is any worse. Sean On Sat, Dec 31, 2011 at 8:19 PM, Chris Roper wrote: > It all depends on your experience level and the reason to create a PCB. > > I =A0used to etch my own boards, many years ago, but the chemicals I > used back then are considered a NO NO now, even if I could find them I > doubt I would use them. > Just disposing of them is an issue that we were not aware off. > > If you are creating a, low frequency, low current, =A0one off device then > Viro Board works well. > > If you are prototyping on a Breadboard then the Breadboard format PCB's > from AdaFruit are great. > > If you need to run off a batch or intend to go into production, then a PC= B > service is a must. > > Personally I think home etching is a thing of the past. > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .