U of S | Mailing List Archive | alt-photo-process-l | Re: Overexposeure was Re:Pinhole gums

Re: Overexposeure was Re:Pinhole gums

Could it be that the hardening agent you are using for the gelatin did not activate in the cold well and then when you coated with the gum, it was causing a hardening of the gum?

I would try sizing a sheet in "normal"  temperature and humidity and then try a gum print on it and see what happens.

Fall seems to be when lots of people have problems with printing due to changes in temperature and humidity.




On Nov 30, 2008, at 1:11:45 PM, "Diana Bloomfield" <dhbloomfield@bellsouth.net> wrote:
From:"Diana Bloomfield" <dhbloomfield@bellsouth.net>
Subject:Re: Overexposeure was Re:Pinhole gums
Date:November 30, 2008 1:11:45 PM CST
To:alt-photo-process-l@usask.ca
Hey Katharine, David-

Still here-- we were on our way out the door to catch a ferry to get  
back home, and then our cat managed to hide herself so we couldn't  
leave.  We finally found her hiding in a closet-- anyway--  as far as  
overexposure-- that is what it sounds like, though I was using the  
same exposure times as before.  So-- since this was without the usual  
humidity, it couldn't have been overexposure, right?

On Nov 30, 2008, at 2:05 PM, Katharine Thayer wrote:

>
> On Nov 30, 2008, at 10:51 AM, davidhatton@totalise.co.uk wrote:
>
>> That's right Katherine. Higher humidity faster printing..What was  
>> I thinking??
>>
>> It just looks that there is some kind of over-exposure thing going  
>> on here.., hmmm
>
> Yeah, I know, it's confusing, and I agree that it looks like  
> overexposure, that or possibly (but less likely IMO) pigment  
> stain.   I'm trying to work up a flow chart kind of thing that  
> would help us organize what variables and elements we're looking  
> at, because reading back through the thread I found the discussion  
> very confusing.  Stay tuned...
> kt



--