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Handmade Liquid Emulsion

Prof_Pixel said:
The other young fellow from a couple of years ago was Chris Holmquist.

Bob, I'm the fellow who talked to you all yesterday afternoon about the power supply.
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Prof, I know -- we've talked at 2-3 workshops now; last was the Digital Negative workshop in March 2016. Good to see you again, and looking forward to building one of those pump units. My own ham radio days are far behind me, but I do remember which end of a soldering iron to hold.

Robert
 
thank goodness you replied here, I thought he was talking to me and I was thinking I was losing my mind ( what power supply)
 
dwross said:
(Your print, Cyclone #3 is gorgeous!)
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thanks denise !


jason
if the GEH recipe is proprietary at the moment,
check out the light farm website and book
there are recipes ( fast and/or dyed ) there
that are tested and true recipes. one of mark osterman's
is there too...
good luck !
 
Photo Engineer said:
Heating that long (depending on temperature) will denature the gelatin and cause other problems. Knox gelatin is not satisfactory. Use an oxidized photo grade gelatin.

PE
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I think I I was heating around 100 F. This was back before Al Gore invented the internet. All I had for information was a 100 year old book from U of Iowa library. I remember being surprised that everything worked so well.
Next time, if there is a next time , I'll be sure to get the right materials.
Thanks for the info.
Best Mike
 
Jason, the final formula is Nick's. I really don't have an exact copy, but basically it is the bromide emulsion in the book minus the ammonia digest. Then he has applied some changes to sulfur sensitization and added gold sensitization. Please contact him for details.

The final goal is to get a (relatively) odorless high speed ortho (or pan) emulsion. Ammonia is too hard to handle for some.

Sorry that I don't have the exact formula.

PE
 
Bob Carnie said:
thank goodness you replied here, I thought he was talking to me and I was thinking I was losing my mind ( what power supply)
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Bob C. - Sorry, 'I painted with too broad a Bob brush' and included both of you in the same posting. The part of the reply addressed to you was in response to your earlier comment "Who is Nick btw , I remember meeting two younger guys when I visited , is he one of them." As I said, the other guy is Chris H.
 
Is Chris still at GEH or still in Rochester?
 
jnanian said:
thanks denise !


jason
if the GEH recipe is proprietary at the moment,
check out the light farm website and book
there are recipes ( fast and/or dyed ) there
that are tested and true recipes. one of mark osterman's
is there too...
good luck !
Click to expand...
Thanks, John. I can say with complete honesty (humble is another matter) that all the recipes in my book and website have been tested thoroughly and made successfully for years now. Christopher James, Jill Enfield, Dan Burkholder, and other respected alternative process photographers have all juried my prints into their shows. James and Enfield then asked me to be in books they were writing. I say this not (only) to brag on myself, but more to try to convey that there is interest in and growing acknowledgement of handmade emulsion photography. It's still a small niche, but in the highly competitive world of photography, to find a small niche is to find a treasure. Gaslight, chlorobromide, P.O.P, and bromide enlarging papers are all easy to make. So are paper negatives. Film or plates can be made (so far) up to ASA 100 ortho, or panchromatic in a slower emulsion. I'm almost entering geezerhood, as are many of us here, so obviously I'm not an ageist, but the medium needs younger practitioners who can bring a fresh perspective to the art of it all. I have my fingers crossed.
 
Chris was in Germany traveling, last I heard. He does plan on returning. He is currently posting pictures of his ongoing trip on Facebook.

PE
 
This thread makes me want to get over to Rochester and swing by GEH again. It also reminds me that I need to contact the local high school art teacher and see if she wants me to come in to present on dry plate photography again (it was a relative hit last year).



Thanks for that and no worries Re: exact formula. I have enough to go on. With my schedule (I've started a new job as Director of Engineering at a small but growing R&D company), this may end up being a winter project...which should give me plenty of time to figure out an approach.

Hope you are doing well.

Regards,
Jason
 
Robert,
I saw one of your plates on Facebook from the Eastman workshop last week. Lovely. Congrats!
 
dwross said:
Robert,
I saw one of your plates on Facebook from the Eastman workshop last week. Lovely. Congrats!
Click to expand...

Thank you, Denise! I was very pleased with that one, and am looking forward to more playing around with sensitization. Also looking forward to your second book, quite enjoyed the first one...

Robert
 
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