Homebrew PCBs

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

Roland F. Harriston, P.D.
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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,
>