Liquid Tin by MG Chemicals. I think I got it from Amazon over a year ago and still using the same 4 oz bottle.
DuWayne
DuWayne
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RE: [Homebrew_PCBs] Re: Heatless (cold) Toner Transfer for PCB making
2016-01-11 by duwaynes@...
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2016-01-11 by duwaynes@...