|
Marek,
You need to avoid having any wood chips in the mix as they can gouge the print. I've found that a wire mesh kitchen colander is inexpensive and effective in removing any wood chips. You do need to let the sawdust fully hydrate by preparing it at least 2-3 hours before use. Finally, use enough sawdust in your mix so that when poured it has the consistency of a thick soup.
I have never seen the grain affected by the consistency of the sawdust slurry. The grain is inherent to the process and is effected by the warm soak time and temperature which precedes the sawdust slurry development.
I hope this answered your question.
Sincerely, Art
On Thu, 24 May 2007 19:38:36 0000, Marek Matusz wrote
> Art,
> Thanks Art and Judy who replied to my note. Should the sawdust particles be of certain size or is it good as is. Judy mentioned something about sieving it. Is the sawdust particle size related to the graininess of the development?
> Marek Matusz
>
>
From: achakali@wideopenwest.com
> Reply-To: alt-photo-process-l@usask.ca
> To: alt-photo-process-l@usask.ca
> Subject: Re: Direct carbon
> Date: Thu, 24 May 2007 13:38:09 -0500
>
> I would think so . . . I would be cautious to be certain you've obtained it before its caustic or acid treatment though.
> Art
>
> On Wed, 23 May 2007 20:13:55 -0400 (EDT), Ender100 wrote
> > Art, would a slurry of paper pulp work?
> >
> > In a message dated 5/23/07 6:16:02 PM, achakali@wideopenwest.com writes:
> >
> >
> > I wood stay clear of pine as it is very acidic.
> > I use poplar wood sawdust. Mix it with water and after a few minutes the sawdust hydrates and you are good to go. You want enough sawdust in the slurry so that it pours like a thick soup.
> > Art
> >
> >
> >
> >
> > Best Wishes,
> > Mark Nelson
> >
> > Precision Digital Negatives - The System
> > PDNPrint Forum at Yahoo Groups
> > www.MarkINelsonPhoto.com
> >
> >
> >
> > **************************************
> > See what's free at http://www.aol.com.
>
> --
> WOW! Homepage (http://www.wowway.com)
>
>
>
PC Magazine’s 2007 editors’ choice for best Web mail—award-winning Windows Live Hotmail.
--
WOW! Homepage (http://www.wowway.com)
|