[alt-photo] Re: Gum over cyanotype question

[Willen, Matthew S]

Hi Francis
Fabriano Hot Press extra white, 300 lbs
Potassium, 1 part gum, part mixed gum/pigment, 2 parts Na dichromate
Gum exposure about 8 minutes under a bank of 12 uvbl bulbs.

--Matt

On 2/27/12 10:57 AM, "francis schanberger" <frangst at gmail.com> wrote:

>These will probably help the discussion:
>
>What paper are you using?
>What is the gum sensitizer mixture? (ammonium or potassium dichromate)
>(1:1
>or ?)
>How long is your gum exposure?
>
>-francis
>
>
>-- 
>francis schanberger
>
>www.francisschanberger.com
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