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Sponge way for etching pcbs?

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I have seen a way that people just poured a small amount of etchant over the pcb and rubbed the board with a sponge. I want to know can it work.

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Jul 13 at 09:55
Garry Thorn

It is really a good way which can decrease the waste.

Sep 11 at 08:24
servis.av

This method is very well. But you need to be careful, otherwises you can simply scratch the protecting mask which is over the copper.

Oct 24 at 08:45
uooa
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