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Subject: Re: [Homebrew_PCBs] Dry film

From: DJ Delorie <dj@...>
Date: 2008-10-25

"lcdpublishing" <lcdpublishing@...> writes:
> chemical will stay "active" and as such, I could be reusing it. Has
> anyone tried this?

So far, my developer and stripper haven't "aged" and I use them very
infrequently.

> Should the resist be removed or can it be left on the copper?

In my case, I strip the film off with a NaOH solution, and tin plate
the copper to protect it.