From: Joe Portale (jportale@gci-net.com)
Date: 07/15/01-07:33:00 PM Z
David,
Here is a trick that you can try with print drums and pyro. I used this
technique for a couple of years with PMK and it works just fine. I have
never tried B&S's Rollo Pyro, so I can't say how it will work with the
technique below.
Room lights on
1. set everything out where you can find it.
2. Fill the tube with water at your processing temp.
3. Turn off the lights
4. take the film out of the box or holder and place into the water filled
tube.
5. after a few seconds, GENTLY pull the film away from the walls of the tube
and allow the water to get behind the film.
6. put the cap on the tube. The rest can be done with the room lights on.
7. Dump the water out of the tube and add 8 ounces of 1% sodium metaborate
(about 1/8 teaspoon per 500 mils is close enough)
8. run on the motor base for two minutes
9. dump water and replace with your 1/2 mixed pyro solution (make up 16 oz
and use 8)
10. Run on motor base for 1/2 the amount of time, dump add new pyro and run
for remaining time.
11. use water instead of stop bath, two or three minutes with water change
every minute. (on roller base)
12. fix using your traditional fixer and time, again on the roller base.
13. when fix is done, dump fix and rinse a couple of minutes with clean
water
14. add 4 to 8 ounces of the sodium metaborate solution and run on base for
2 minutes.
after the after bath, pull the film out of the tube and wash normally. Any
anti-halation backing still left will come out in the final wash. You can
also skip rolling the staining bath and simply do it in a tray. This bath
will also get rid of any stubborn anti-halation backing stain.
Just as a side note, I have abandoned PMK in favor of Sandy King's Pyrocat
formula. It is less fussy than PMK. The stain obtained with Pyrocat is
brownish instead of green or yellowish as with PMK. Pyrocat stain is also
not as intense. This makes for shorter printing times. The development time
is about 18 minutes with Tri-X at 70 degrees for a decent platinum neg. And
the Pyrocat neg can be used with conventional photo papers.
Hope this helps.
Joe Portale
Tucson, AZ
----- Original Message -----
From: "Nash Computer Technology" <nashcom@btinternet.com>
To: "Alt Photo" <alt-photo-process-l@sask.usask.ca>
Sent: Sunday, July 15, 2001 5:55 AM
Subject: Sodium Metaborate
> Hi
>
> I'm curious about what Sodium Metaborate does with regard to Pyro
> development.
>
> I've been using Rollo Pyro with 5x4" negs in a Jobo CPE2 and 5x4" drum.
> However, I now need to process 10x8" negs, and have been having a few
> problems.
>
> I thought I would try a 10x8" print drum on my Jobo (to save the expense
of
> buying an Expert drum and/or a CPA/CPP processor). The first attempt
> produced negs where the anti-halation layer wasn't sufficently cleared. I
> re-fixed in a tray and rinsed, and it got rid of the marks, but I wasn't
too
> happy about the results.
>
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