Re: argyrotype help please

Hi Darryl,

I'l give the extra sulfamic a try as well. Can I just add 1 g to my
100ml of sensitizer, or should I re-heat before adding?

For light source, I am using an 11 x 14 exposure unit of BLB tubes I
snagged from the Palladio co. when they went on hiatus.

Thanks,
Christine

PS Thanks for the tip on Blake, I am getting some G.C. el cheapo.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~
"Crazy" is a term of art: "Insane" is a term of Law. Remember that, and
you will save yourself a lot of trouble.
      ~ Hunter S. Thompson
On Jan 7, 2004, at 5:14 PM, Baird, Darryl wrote:

> I use cranes 90 lb with Argyro too, but I've never sized. Didn't felt
> it was needed. You could try the extra boost of sulfamic acid that
> Ware suggests for contrast. Also, there is a product at Home Depot in
> the tile section call Tile Cleaner that is 100% sulfamic acid. Used
> for students and it seemed just fine... at $7.00 a lb it's cheap too.
> On the cheap trail, many of my students also tried off the shelf
> Crane's 100% cotton stationery and it was very nice.
>
> Also, what's you light source?
>
> -Darryl
>
>
> -----Original Message-----
> From: epona [mailto:acolyta@napc.com]
> Sent: Wed 1/7/2004 4:25 PM
> To: alt-photo-process-l@sask.usask.ca
> Cc: epona
> Subject: argyrotype help please
>
> This may be applicable to other iron silver processes as well.
>
> I have never been able to get the Dmax I want out of this process, tho
>
> my last batch was not too bad. This batch, however, is horrendous. I
>
> am getting flat prints with a weird silvery sheen over the surface,
> most noticeably in the darker areas, because, well, they are dark. I
>
> made new sensitizer in case it was old, and the extra silver salts
> were
> hanging out and depositing on the paper, which is Crane's 90 lb cover
>
> stock (aka platinotype). The formula is:
>
> Sulphamic acid (spelt 'sulfamic' in the USA) NH2SO3H .....7 g
> Silver(I) Oxide Ag2O
> ............................................................7 g
> Ammonium Iron(III) Citrate (the green form) ....................22 g
> Tween 20
> ......................................................................
> ..
> ........0.2 cc
> Distilled water to make
> ......................................................100 cc
>
> Still getting the silvery sheen, whether I tone in gold chloride or
> just fix in sodium thio. Then i made the (duh) connection that the
> bad
> prints started to happened coincidentally when I began using crane's
> sized with Dick Stevens' sizing formula, which is this:
>
> gelatin 7g
> distilled water 500 ml
> alum 1g
> alcohol absolute 25 ml
>
> do you think it's the sizing causing this weird sheen? i have sized
> my
> paper previously with a .2% gelatin solution minus the alum and
> alcohol. could it be those additives? should i trash this whole idea
>
> and just try sandy's kallitype formula? I got a deadline i'm trying
> to
> meet for a finished piece for next thursday.
>
> thanks in advance,
> christine
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ~~
> ~~~~~
> "Crazy" is a term of art: "Insane" is a term of Law. Remember that,
> and
> you will save yourself a lot of trouble.
> ~ Hunter S. Thompson
>
>
>
>
> <winmail.dat>
Received on Wed Jan 7 16:29:07 2004