Re: Albumen question

Thanks for the reply David. It sounds like you are
essentially using both methods: heat and alcohol. I
don't have a dry mounting press, but I may look around
to see if I can find one to run some paper through to
see how it works. I'm not sure I understand your
smoothness explanation, can you explain how you think
this affects the second coat, and does this mean you
think there is pressure needed in addition to heat?

David
 
--- Davison & Associates <info@davisonphoto.com>
wrote:
> David,
> I am replying to you directly as a reply
> to the list from here
> is very complex. You are welcome to forward this to
> the list if you wish.
> I find the use of isopropyl alcohol
> with 2% ammonium chloride
> absolutely essential and entirely satisfactory for
> the intermediate coat.
> Her in south Dublin we have very soft water.
> I use archival drafting paper and following the
> first floating on albumen
> for 2-3 minutes I air dry thoroughly before soaking
> in alcohol for about a
> minute and then air dry again. Then I hot press in a
> dry-mounting press to
> produce a perfectly smooth surface for the second
> floating stage. This I
> then air dry and hot press again to provide good
> flatness for floating on
> the silver nitrate bath.
> I suspect your problem stems from not
> having the paper
> sufficiently smooth prior to the second albumen
> coating stage.
>
> I hope these comments will be of help.
>
> David H Davison.
>
>
>
> ----- Original Message -----
> From: "David Barker" <dbarker_ca@yahoo.com>
> To: <alt-photo-process-l@sask.usask.ca>
> Sent: Saturday, March 12, 2005 10:35 PM
> Subject: Albumen question
>
>
> > Has anyone ever tried the isopropyl alcohol curing
> > step between albumen coats as mentioned, for
> example
> > in James' book? I had been using a warm iron up
> until
> > now, but tried the alcohol (with ammonium chloride
> in
> > it) on my last batch of paper to see if it would
> > improve my results. No dice, every image is coming
> out
> > mottled. I ran a piece of paper from a previous
> lot
> > that was cured with the iron and it seemed to work
> > fine. Just wondering if someone has used it
> > successfully and has any experience with trouble
> > shooting it, otherwise, I'll be back to the
> ironing
> > board.
> >
> > Thanks,
> >
> > David Barker
> >
> >
> >
> >
> >
> > __________________________________
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> >
> >
>
>
>

                
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Received on Tue Mar 15 07:38:43 2005