Silver chloride based photo emulsion

[dwross]

http://www.thelightfarm.com/cgi-bin/htmltutgen.py?content=16Jan2013
pretty darn easy

 

[Máx Arnold]

I didn't wash the excess salt out of the emulsion. you have to do that if you want to coat it on glass plates, but since paper is able to be washed and saturated you can skip that step.

Awesome. Taking notes of this...

im not sure what you mean using a gas alcohol burner, you mean to expose it ?

I mean using the spirit burner as the heat source for melting the gelatine and "cooking" the emulsion... A silver chloride emulsion probably won't, in any way, produce an image with such a faint light source. (Or at least I think so...)

because of user error on my part I didn't use extremely dilute sodium thiosulfate in one of the steps but extremely dilute dektol

Nice... this is quite interesting. It would be nice to see how goot it can come...

Pure Silver Chloride emulsions can be made with an ISO of about 25 - Outdoors and with no UV filter.

Probably this could get expanded some degrees...

Notes, notes...
Nice to see.
Notes notes
Take it easy
Take 'em all.

 

[removed account4]

yes you can easily melt the gelatin with a sprint burner, I melt it with hot water from the sink
my set up ins't as fancy as the one Denise linked to
yesterday I made some silver chloride emulsion all I needed was
an amber jar, glass jar .. a graduated scale and 2 plastic spoons
I measured out my salt water in the graduate and put it in the amber jar, I measured the gelatin and added and mixed with a spoon until it was incorporated
I measured the silver nitrate and again graduate and small glass clean jar measured the distilled water into the glass jar,
mixed with a different spoon, then I mixed the gelatin mixture and drizzled the silver nitrate in there until it was gone...
that is pretty much it... its ready to either be noodled washed and remelted or just remelted and stored... took probably 20 minutes.. no burner not even hot water... ezpz lemon sqweezy.

 

[NedL]

I've been away too long! John, what kind of paper did you paint that onto? Cool way to make paper negatives!

 

[removed account4]

hey ned !
that is Bristol 300 I think, super inexpensive and comes in a pad . I've started to take regular cheap butchers paper and wrapping paper that comes in a roll gotten at michaels ( and other places ) and soaking them in water ( sometimes salt water) and it does something really interesting to the paper and makes it less pressed ( if that makes sense ). im working out some details but still having fun trying to figure out what papers work best for this sort of thing. I've also been doing things like chemigrams by soaking either pre-coated silver chloride paper super saturated salt ( like a slug of salt and a giant pickle jar of water ! ) or objects I put on the paper in the same water, and making sun prints. I scan them and get all sorts of interesting stuff going on...
https://www.photrio.com/forum/media/todays-print-6-17.62956/
little bit of hybrid insanity, but still fun

 

[Máx Arnold]

Soooo niceee..
But, can you actually ripen the emulsion with that method?
Probably... why not?

Cool way to make paper negatives!

indeed...

https://www.photrio.com/forum/media/todays-print-6-17.62956/

Loved it. How did you get all those colors?

 

[removed account4]

I used dektol and ansco 130 and caffenol to develop the paper, these says the silver chloride emulsion I am using I use like POP paper, its reddish chocolate. brown.. really pretty.

 

[Peter Schrager]

I used dektol and ansco 130 and caffenol to develop the paper, these says the silver chloride emulsion I am using I use like POP paper, its reddish chocolate. brown.. really pretty.

it aint POP if it don't print out on it's own......just razin you John!!

 

[NedL]

Peter is right, but I think all you really need for it to be POP is just a little excess silver nitrate, and it's surprising how little is needed.
If John added a touch more silver nitrate than was needed to use up all the salt, then it might already print out ( he probably didn't ... it might cause the emulsion not to keep very well ) otherwise, if you brush the surface with a few drops of 1% silver nitrate solution and let it dry, it probably will print out very nicely.

Take this with a "grain of salt" I haven't tried it and I've never made emulsion. But I have tried this and it works great for troublesome papers: you can take a sensitized salted paper, wash it until there's nothing left but silver chloride, let it dry, and then brush a tiny amount of 1% AgNO3 onto it and it will print out just like it would have if you didn't wash it. Also there was a fellow here a few years ago who made some nice POP prints from regular photo paper by brushing on some weak silver nitrate solution and letting it dry.

Anyhow, ever since I read this post a few days ago, I've been thinking it would be cool to make some pinhole paper negatives on paper coated w/ seawater homemade emulsion...


Edit: OOPS Never Mind! I just went and looked at the Patton emulsion at TLF... there's a lot of excess salt. I think my idea only will work if you wash the emulsion. With unwashed emulsion, it might work to coat the paper, let it dry well, then wash the paper and let it dry again before painting some 1% silver nitrate onto it.

 

[removed account4]

Peter:
the regular prints I make with my emulsions these days I don't develop at all, they just develop in the sun I don't even wash them
sometimes I just wash them in salt water

Ned: I was thinking of adding a little silver nitrate to my SVG over the top to see what would happen... always something to do that's fun

 

[TCDP]

hi max

i made something similar but i added in some bromide cause i had some lying around
and the last time i made it i added in a few cc's if dilute dektol by mistake
( it was supposed to be hypo but i misread the bottle ) and it was super fast instead of super slow

john

So placing a few Dektol drops when making the emulsion makes it faster?

tcdp

 

[removed account4]

it did for me, but I haven't done it since, so I can't say it will work every time! it was like a few drops and then dilute with 1oz of water ...
if you do this, I would do it with a micro-batch to make sure it works. before doing it with a bunch of silver !

have fun!
John

 

[removed account4]

John,
Salted gelatin sounds interesting, I'd be interested in hearing about your results. As it happens, I just received an order I did from B&S, a salt print kit + some gelatin (just because), and some gold toner.

Hey Barry

I've been printing on the salted emulsion like salt prints the past 4-5 days, they come out great !
I've also been printing out ( sometimes developing in developer, sometimes just exposing and not developing ) too, they are coming out very nice
when I get a chance I'll post some in the gallery, haven't had a chance to scan lately. ...

John