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lumi
1-Nov-2016, 04:35
I mixed up some Ansco 130 developer (split version) today and have some glycin left over so I thought I should try Jay Defehr's GSD-10 developer. But I really could use some advice.

This is my set up:

Jobo CPA-2
Expert Drum 3005 (takes 5 sheets)
8x10 format Fomapan 100 @ ISO 100

I need some input to address these worries:

Presoak or not
Dilution
Approx time (I'll calibrate but need a starting point
How to avoid banding (have had some problems with Diafine in this respect)
How many sheets can be developed with 800 ml of diluted GSD-10

The negs will be contact printed (silver gelatine) or scanned for large ink jet printing.

Very grateful for any advice.

Kind regards,
Sverre Aurstad

jnantz
1-Nov-2016, 07:02
hi sverre:

sadly i don't have any experience with that developer,
i've experience with a handful of others but not gsd-10

not sure if you poke around flickr or the blogs

http://gsd-10.blogspot.com (this is jay's blog on the developer)
and
the group on flickr
https://www.flickr.com/groups/1447120@N21/

have fun!
john

Mark Darragh
1-Nov-2016, 20:23
Hello Sverre,
I use GSD-10 from time to time and have used it with Fomapan 100, although I get better results using Acros, TMX and TMY-2. Without speaking for Jay, I believe he formulated it for reduced agitation (stand and semi-stand) development which is how I use it.

My times range between 20 minutes and 1 hour usually with a dilution of 1:30 (based on the updated formula). Presoak about 3 minutes, 1 minute initial agitation and 10 sec at 1/3 and 2/3 total development time.

I hope this is of some assistance to you.

All the best.

Peter De Smidt
1-Nov-2016, 21:17
Maybe ask Jay?

lumi
1-Nov-2016, 22:25
Maybe ask Jay?

I tried to message him here but that is not possible. Then I searched for his email address with no luck. Do you know how to get in touch with him?

lumi
2-Nov-2016, 04:24
Thanks for this! The blog answers some of the issues.

jnantz
2-Nov-2016, 04:24
he hsn't been here for 10 years
you can probably reach him through the links i posted.

lumi
2-Nov-2016, 07:20
he hsn't been here for 10 years
you can probably reach him through the links i posted.
Yes, I'll try that - thanks for your info.

Taija71A
2-Nov-2016, 09:23
I tried to message him here but that is not possible. Then I searched for his email address with no luck. Do you know how to get in touch with him?

Sverre, I have Jay's Email Address.
If you PM me... I would be more than happy to forward it to you.

Thank-you! -Tim.

lumi
3-Nov-2016, 07:22
Thanks, Tim – I already got it!

Taija71A
3-Nov-2016, 07:52
Perfect. No problem Sverre... You are more than welcome!
Both, Ansco 130 and GSD-10 are very interesting Film Developers.

Have fun!