[Alt-photo] Re: Brushing gelatin on paper
Luciano Teghillo
luciano at lucianoteghillo.com
Sun Dec 15 18:40:44 UTC 2013
Keeping my fingers crossed. I can't wait to try, and if successful, I will
try to source a pack of A4 sheets to play during the holidays.
I will make sure to report back on my findings.
All the best,
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
Diana Bloomfield
Sent: Sunday, December 15, 2013 7:28 PM
To: alt-photo-process-list at lists.altphotolist.org
Subject: [Alt-photo] Re: Brushing gelatin on paper
Oh, great. Do let us know what happens. If it works for you, and I don't
see why it shouldn't-- you'll wonder why you ever used a gelatin sizing. :)
Diana
On Dec 15, 2013, at 1:22 PM, Luciano Teghillo wrote:
>
> Hi Diana,
>
> After I saw this link (http://www.canson-infinity.com/it/bfk310.asp) I
> had an illumination, and I found a sample pack of Canson paper for
> inkjet printing I had and inside I found two A4 sheets of BFK Rives
> 310gsm. I will give it a try as soon as possible and report back.
>
> Thanks again,
> 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 Luciano Teghillo
> Sent: Sunday, December 15, 2013 7:08 PM
> To: alt-photo-process-list at lists.altphotolist.org
> Subject: [Alt-photo] Re: Brushing gelatin on paper
>
> Hi Diana,
>
> I will give it a try if I only could find those types of paper here.
>
> The Fabriano soft-press you use is textured? Also is it Traditional or
> Extra White?
> By looking at the Fabriano site there are so many choices...
> Artistico Traditional White:
> http://www.fabriano.com/p/en/22/artistico_traditional_white
> Artistico Extra White:
> http://www.fabriano.com/p/en/15/artistico_extra_white
>
> The BFK Rives heavyweight is this one?
> http://www.canson-infinity.com/it/bfk310.asp
>
> Thanks for the help,
> 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 Diana Bloomfield
> Sent: Sunday, December 15, 2013 6:45 PM
> To: alt-photo-process-list at lists.altphotolist.org
> Subject: [Alt-photo] Re: Brushing gelatin on paper
>
> Hi Luciano,
>
> This is just my experience, but when I used to size with gelatin, I
> never felt I got things quite right, and once I started printing-- it
> worked out
> okay-- no staining-- but I could always see a difference where the
> gelatin went on too lightly in places. I suspect the paper I was
> using was textured enough that the gelatin was never absorbed evenly
> across the page. That unevenness always showed up in the final print
> (enough to bother me, though maybe others didn't notice it).
>
> And I'm sure lots of people still size their papers for gum, but there
> are at least two papers out there that I've been using that require no
> sizing at all (and I've made many multiple layers on prints). Other
> people on the list use them as well-- which is where I got the
> information. I also don't pre-shrink these papers, and have made
> prints up to 17x17. Maybe they would be fine bigger, too, but I don't
> currently have the capability of making bigger prints.
>
> One of the papers is Fabriano soft-press 140 lb; the other is BFK
> Rives heavyweight. I use both, and only just started using the BFK
> this past year. They're terrific. And as long as they keep making
> these papers the way they're made now, I would never go back to
> gelatin sizing (or any
> sizing) for gum printing.
>
> So when I read your description here, it just sounds so time-consuming
> and tiresome and primitive-- when you really don't need to do it all.
> Why not try one of these papers, and don't bother with sizing?
>
> Diana
>
>
> On Dec 15, 2013, at 12:30 PM, Luciano Teghillo 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.
>>
>> The papers I was using as a comparison where noticeably more yellow
>> (both Fabriano Artistico, Traditional White) when looked on a light
>> table, so my doubt is that my paper did not receive enough gelatin.
>> Of course I cannot be sure because the samples I used for comparison
>> have been tray sized and not brush sized. Also, for least one, the
>> gelatin used is similar to Knox (Paneangeli for the Italians), while
>> I used Photographers' Formulary Hard Gelatin (250 Bloom).
>>
>> Also when I compare my sized paper against a sheet of the same
>> unsized paper, I cannot see any discernable difference, even under an 8x
loupe.
>>
>> When brushing I load the foam brush, and move horizontally,
>> vertically and diagonally with speed (not quite the same as when you
>> coat with pigment, but almost), and make sure the brushing is uniform
>> by looking at the surface from an angle.
>>
>> Maybe I brush to fast and "pull" the gelatin too much that it does
>> not get into the paper?
>>
>> Since I have already wasted and entire set of Fabriano Artistico that
>> I presume I sized incorrectly, I want to make sure this time I do it
>> correctly.
>>
>> Maybe is something totally unrelated to sizing. Maybe I should harden
>> the gelatin before making a comparison.
>>
>> I tried to scan the paper samples (mine and those used as a
>> comparison) it's useless. You can only see the paper ridges and
>> valleys, but nothing else.
>>
>> I have posted however two images on a previous test I did. The only
>> thing different between the two tests is the paper. Everything else
>> is the same, done on the same day, developed for the same time, etc.
>>
>> - http://www.lucianoteghillo.com/images/test01.jpg - This paper was
>> sized by someone else.
>> - http://www.lucianoteghillo.com/images/test02.jpg - This is the
>> paper I sized on a previous batch.
>>
>> Feeling frustrated....
>>
>> Thanks for any help,
>> Luciano
>>
>>
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