[Alt-photo] Re: GUM - Wash paper after hardening

[Marek Matusz]

Luciano

I don't do much gelatin sizing since I started using pva. I also never used formaldehyde. The glyoxal hardened gelatin would frequently turn yellow for me but a brief wash next day would always clear it. 
Marek

Sent from my iPhone

> On Dec 18, 2013, at 8:26 AM, "Luciano Teghillo" <luciano at lucianoteghillo.com> wrote:
> 
> 
> Yes, I do hope that I do not have to size/harden anymore but I have 5 large
> sheets (70x100) of Fabriano Rosaspina that need to be used. Maybe I could
> keep them and use them with Cyanotype. Will see...
> 
> Regards,
> 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: Wednesday, December 18, 2013 5:15 PM
> To: The alternative photographic processes mailing list
> Subject: [Alt-photo] Re: GUM - Wash paper after hardening
> 
> I don't know, I personally don't like the idea of a separate hardening
> bath(*), therefore never used one.
> 
> (*) Because:
> 
>   - I'm not sure about the stability of large diluted formalin baths,
>   - You have to deal with considerably more formalin,
>   - It's a two steps process taking more time than I would like to spend.
> 
> Good luck with FAEW/SP, it's a very nice paper.
> 
> Regards,
> Loris.
> 
> 
> 2013/12/18 Luciano Teghillo <luciano at lucianoteghillo.com>
> 
>> 
>> Thanks. I do a separate path and use 60ml 37% formalin in 4 liters of 
>> water.
>> Seems like I could use less formalin. What do you think?
>> 
>> Regards,
>> 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: Wednesday, December 18, 2013 5:02 PM
>> To: The alternative photographic processes mailing list
>> Subject: [Alt-photo] Re: GUM - Wash paper after hardening
>> 
>> No need to wash after formalin hardening. Formalin evaporates readily.
>> Could be different for other kinds of hardeners...
>> 
>> Regards,
>> Loris.
>> 
>> P.S. Mind that I use very little formalin, 0.5ml per 100ml 3% gelatin 
>> solution.
>> 
>> 
>> 2013/12/18 Luciano Teghillo <luciano at lucianoteghillo.com>
>> 
>>> 
>>> Hello All,
>>> 
>>> I have one more doubt about paper preparation.
>>> After the gelatin sized paper has been hardened with formalin and 
>>> dried, should I wash the paper in water (probably running water)?
>>> 
>>> 
>>> Thanks,
>>> Luciano
>>> 
>>> PS. the Fabriano soft-pressed has been shipped and should be here
>> tomorrow.
>>> Hope to have some news soon.
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