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Subject: Re: [Homebrew_PCBs] Re: Alternative photoresist chemicals - Idea?

From: "Roland F. Harriston" <rolohar@...>
Date: 2012-04-15

Thanks for information David. I know nothing about Gum Arabic.

Roland F. Harriston, P.D.
∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗

David wrote:
>
>
> Roland,
> Sorry, it was an addendum to my previous message, Gum Arabic could be
> used as the emulsion base, as can egg yoke, cream etc. when mixed with
> the potassium dichromate, once mixed they will all polymerize after
> exposure to UV or sunlight,
>