There's someone selling some here:
http://www.ebay.com/itm/Solder-Mask-Resist-Green-Dynamask-5-sheets-30-x-20-CM-Incl-50-gram-developer-/271109281266You can put solder-mask on any PCB regardless of how you etched it etc.
No component outlines of course, that is for the silkscreen layer, totally different to solder-mask layer.
--- In Homebrew_PCBs@yahoogroups.com, "alan00463" <alan00463@...> wrote:
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> Does anybody know where I can get this film in the USA?
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> Does anybody know if this stopping agent layer will work with the toner transfer etching method, as opposed to the UV-photo-etching method shown in the video ?
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> Am a little disappointed it doesn't put component silhouettes in the green film, but I guess a white film would be better for that anyway.
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> Allan
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