U of S | Mailing List Archive | alt-photo-process-l | Re: ferri sesquichlorati

Re: ferri sesquichlorati

Hi Keith :-)

Thanks, for explanation, I recognise that effect from drying carbon prints,
the more relief the more curling of the paper...

On 10/23/06 3:47 AM, "Keith Gerling" <Keith@GumPhoto.com> wrote:

> The problem that often arises when one attempts more than 8 layers is a
> "warping" effect caused by more gum sitting in the shadows than in the
> highlights.   As the shadows areas build in density with each coat,
> surrounding highlight areas continue to clear.  The shadow areas begin to
> appear on the dried print as shiny, lumpy islands of gum that warp the
> surface of the paper.
> Keith