Thread: Discussion PCB etching problem
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Old Jan 27, 2006, 07:58 AM
Dave Wulff is offline
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Part of it depends on the thickness of the copper. US made boards are rated in ounces, the only real way to be sure is to look at the packaging. In room temp fresh ferric chloride, with constant gentle agitation, a piece of 1/2 ounce board takes 20 minutes. One ounce board takes about 35 minutes. FWIW, I do not like heating fc, it give off nasty fumes. I know it speeds etching up, but when things go faster, they go wrong faster too. Until you get dialed in, faster etching reduces the time latitude between over and under etched, less margin for error.

Dave
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