[alt-photo] Re: Gum over cyanotype question

[Willen, Matthew S]

Yes, with gel/glut. Maybe it's to give it shot unsized. M

On 2/27/12 12:07 PM, "Henry Rattle" <henry.rattle at ntlworld.com> wrote:

>Matt - is your FA HP sized before the first coat? I sized with
>gelatin/formaldehyde before starting, and found this paper got pretty
>slick
>after a coat or two.
>
>Henry
>
>
>On 27/02/2012 16:21, "Willen, Matthew S" <willenm at etown.edu> wrote:
>
>> 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
>>> _______________________________________________
>>> Alt-photo-process-list | http://altphotolist.org/listinfo
>> 
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