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There are also [http://www.opencircuits.com/Chemical_Etchants alternatives] to some of the chemical processes - e.g. | There are also [http://www.opencircuits.com/Chemical_Etchants alternatives] to some of the chemical processes - e.g. | ||
[[Cupric_chloride_etchant|Air-regenerated etchant]] | *[[Cupric_chloride_etchant|Air-regenerated etchant]] | ||
[http://www.nontoxicprint.com/etchcopperandbrass.htm Edinburgh etch] | *[http://www.nontoxicprint.com/etchcopperandbrass.htm Edinburgh etch] | ||
Another guide can be found here : [http://www.electricstuff.co.uk/pcbs.html Mike's electric stuff] | Another guide can be found here : [http://www.electricstuff.co.uk/pcbs.html Mike's electric stuff] |