[Alt-photo] Re: Brushing gelatin on paper

Loris Medici mail at loris.medici.name
Sun Dec 15 19:23:01 UTC 2013

Ok, Luciano. 3% is fine then. OTOH, why two coats of sizing and why a
separate hardening bath?

When I was sizing with gelatin (I don't anymore, I use PVA now) I was doing
as have described here:

​Different gelatin will have different coloration. I think the yellowing is
not because you haven't used enough gelatin, it's because you've used too

Anyway, Diana's suggestion is sound: if you can find papers that works w/o
sizing opt for them, since sizing is an annoying task.


2013/12/15 Luciano Teghillo <luciano at lucianoteghillo.com>

> Hi Loris,
> Sorry, I meant 3%. I used 12g of gelatin in 400ml of distilled water.
> Luciano
> -----Original Message-----
> From: alt-photo-process-list-bounces at lists.altphotolist.org
> [mailto:alt-photo-process-list-bounces at lists.altphotolist.org] On Behalf
> Of
> Loris Medici
> Sent: Sunday, December 15, 2013 6:44 PM
> To: alt-photo-process-list at lists.altphotolist.org
> Subject: [Alt-photo] Re: Brushing gelatin on paper
> Hi Luciano, the usual size is 3%. I think you've used a too strong
> solution?
> > On 15 Ara 2013, at 19:33, Luciano Teghillo <luciano at lucianoteghillo.com>
> wrote:
> >
> > Hi All,
> >
> > I have been looming in the back an enjoyed the wealth of information
> > all of you share. Of course I have not shared nothing because...well,
> > I am just getting my feet (actually my paper) wet, as you will see.
> >
> > I have a question on brushing gelatin on paper. I have prepared the
> > usual mix of 30% gelatin and kept it at about 45-50 C and brushed it
> > with a foam brush on the print side of my Fabriano Rosaspina paper.
> > I brushed on two coats, after letting the first one dry for a day.
> > This morning I was getting ready to harden the paper in formalin but I
> > had the bad idea of comparing my sheets of paper with a couple of
> > scraps of papers I have from two previous workshops.

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