Re: Gum printing

Thanks for your advice Christina.

Maria

>From: "Christina Z. Anderson" <zphoto@bellsouth.net>
>Reply-To: alt-photo-process-l@sask.usask.ca
>To: alt-photo-process-l@sask.usask.ca
>Subject: Re: Gum printing
>Date: Sun, 30 Jan 2005 21:37:05 -0500
>
>Maria,
>Powder and lump are both fine, but powder you can use immediately.
>I whip
>it up in the blender a couple quarts at a time. That said, I saw my
>prof
>Sam Wang stir the gum powder right into his pigment/water/dichromate
>mix and
>brush his coat on!
>
>I have never used gum in lump form, but it is said it takes a day or
>two to
>dissolve. I am not sure if this is true from firsthand experience.
>There
>is a big can of the lumps in our grad studio, so I should see.
>
>If you already have formalin, use that. I used to not size my
>paper, but
>sizing produces very predictable results and prevents pigment stain.
>Try no
>size, and if stain haunts you, then size.
>Chris
>
>----- Original Message ----- From: "maria ahlberg"
><mariaahlberg13@hotmail.com>
>To: <alt-photo-process-l@sask.usask.ca>
>Sent: Saturday, January 29, 2005 4:24 AM
>Subject: Gum printing
>
>
>>I wonder if there is any difference mixing gum arabicum from powder
>>or from
>>lump.
>>How long does it take for the lump to become solution?
>>
>>I have a paper called BFK Rives 250gram and i have formalin, but i
>>have
>>not decided if i should size the papers with this or with
>>glutaraldehyd.
>>I have good experience with formalin, but i have never used
>>glutaraldehyd?
>>Is there someone who can help me with this questions?
>>Maria Ahlberg ,Sweden Uppsala
>>
>>
>>
>
>
Received on Mon Jan 31 01:51:19 2005