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donbga
12-16-2006, 03:59 PM
My estimated cost for 1 kg of the soft emulsion is about $100. It will coat about 90 sheets of 8x10. I'm still costing it out though. It keeps for at least 6 months in the refrigerator, but should not be melted over and over so it should be divided up into working batches of about 100 g. The user will have to add the surfactant and hardener of choice to the final mixture.

That is what I have been able to come up with as a first cut. IDK who would be interested in buying the emulsion though. Its much more fun to make it from scratch.

PE
Perhaps Bud at PF would consider doing some special order kits to allow potential enthusiasts to test the water.

Jerevan
12-16-2006, 04:07 PM
Maybe doing a package: a bottle of emulsion with the coating blades, just to get people going with how to coat could be an idea?

Alex Hawley
04-15-2007, 09:06 PM
Here's an update to my original post. I had the opportunity to print on a second batch of the hand-coated paper. I got ten good prints, three on Strathmore base and seven on baryta base.

All were made from the same negative, the Cola sign, one that I tested with originally. All of the paper was the soft grade.

The results on this second batch were fully consistent with what I attained with the first batch. I was able to use the exact same exposure and development times. I think this is very significant because it shows a wholly acceptable level of consistency is attainable. Remember, this is home-brew emulsion and hand-coating.

I printed most of the sheets with amidol using the MAS azo formula. As I reported earlier, the development in amidol was very fast. Emergence time is about three seconds, full development by thirty seconds. This takes some getting used to but since I knew what to expect this time, I was able to cope with it and get prints consistent with what I had done before.

The last three sheets were developed in PF 130, 1:1 dilution. The emulsion behaved much better in this developer. Emergence was about seventeen seconds, full development by sixty seconds. Much easier to work with. And, I cannot see any discernible difference between the amidol prints and the PF 130 prints. Maybe someone with sharper eyes could see a difference, but I sure as heck can't.

The bottom line is that this home-brew emulsion and hand-coated paper works and entirely consistent results can be attained from batch to batch. As with everything in photography, there is a learning curve involved with making emulsion and hand-coating. Ron is probably as experienced in doing it as anyone is. But I can tell you, this stuff works.

juan
04-16-2007, 06:43 AM
Salivating.
juan

rmazzullo
04-16-2007, 09:53 AM
Hello Alex...

Great news, and very encouraging. Fabulous results!

Thanks,

Bob Mazzullo

highpeak
04-16-2007, 12:08 PM
Thanks Alex for the report and update. Ron, congrats, you are my idol now :)

This paper is still not for enlargement though, right? In that case, I will just get myself a bigger camera then.

Best luck,

Alex W.

Photo Engineer
04-16-2007, 12:16 PM
Alex;

I have an enlarging paper that is similar to Kodabromide/Brovira as well. It is as fast as Ilford MGIV. I have not given samples but do teach it and show samples at my Workshops.

Sorry we didn't meet when I was in Brooklyn last fall. I stayed in a place near Union and Smith.

PE

highpeak
04-17-2007, 02:58 PM
Ron,

I have to attend one of your workshops if I have time. I'm going to be busy for a while.

Alex W.

David A. Goldfarb
02-22-2008, 01:17 PM
I just took a look at what I'm guessing is one of Alex's prints using Ron's emulsion on Strathmore from this second batch, and it is STUNNING. Ron and Alex are both to be congratulated on this really fine work. If anyone needs an argument for coating your own, this is it.

Thanks, Alex, for including it in the portfolio!

Alex Hawley
02-23-2008, 09:42 AM
Thanks for that very nice compliment David. I placed that print in the portfolio to provide an opportunity for people to see what Ron's home-brew paper can do.

Photo Engineer
02-23-2008, 10:18 AM
Thanks David. All of the kudos go to Alex. All I did was try to replicate Azo.

So, thanks Alex.

Ron

squinonescolon
10-31-2009, 07:27 PM
I know this is an old thread but is there somewhere where we can get this recipe from?

Photo Engineer
10-31-2009, 08:12 PM
A work alike formula is here in the emulsion making and coating forum and there is the actual emulsion for sale from the Photographer's Formulary, an APUG sponsor.

PE

Photo Engineer
10-31-2009, 08:27 PM
Perhaps Bud at PF would consider doing some special order kits to allow potential enthusiasts to test the water.

This formula is now available in 2 grades from the Photographers Formulary.

And, there is a huge backstory on this that will NEVER be told! APUG is not ready for it.

PE

sun of sand
10-31-2009, 09:03 PM
Sounds like a good grating cheese

How long has Formazo been available? Haven't heard of it

Photo Engineer
10-31-2009, 09:11 PM
Several months. IDK for sure.

PE

Tom Kershaw
10-31-2009, 10:40 PM
This formula is now available in 2 grades from the Photographers Formulary.

And, there is a huge backstory on this that will NEVER be told! APUG is not ready for it.

PE

Never?

Tom

Ray Rogers
11-01-2009, 02:32 AM
A work alike formula is here in the emulsion making and coating forum and there is the actual emulsion for sale from the Photographer's Formulary, an APUG sponsor.

PE

Who made or makes this material?

Photo Engineer
11-01-2009, 08:09 AM
Tom - NEVER!

Ray - It is made by the Formulary.

PE

Ray Rogers
11-01-2009, 03:52 PM
Tom - NEVER!

Ray - It is made by the Formulary.

PE

Does this mean Bud?