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Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!

 

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Was it possible to recycle the copper removed by these etchants? Was it possible in mass manufacture of circuit boards to laminate copper outlines of the crcuit paths, when there was substantial empty space on the finished board, so less would have to be etched away ?

??? Bruce Gentry, KA2IVY


On 3/19/22 10:29, Jeff Kruth via groups.io wrote:

Hi Lothar!
Two questions: When you used Ammonium Persulphate, did you have to add an activator (few drops of something) to make it etch faster?? remember Kepro selling a small bottle with their "kit" that have the "magic" activator. Not sure if its needed.
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Second: What is your eBay handle, sounds like you have some good stuff.
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Regards
Jeff Kruth
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