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sycamore photogram "wet cyanotype"


Its slightly-less-scary name is potassium hexacyanoferrate (III).
 
I was thinking of coating the paper for her and calling it "blueprint paper" or "sunprint paper"... they sell it pre-made in the kid's section of the art store.... cheers!
 
Anise. Printed yesterday. I also made a sepiaprint of some acacia that is right now being used as a negative for a cyanotype...

Today I made one of some Queen Anne's Lace, and realized I should have kept it simpler, sometimes less is more. My daughter's high school actually had a class in flower arranging, and making a nice arrangement really is an art... a class that I'd fail at right now but will probably get better

Oh, it's been rainy and cloudy here this weekend and these are still printing pretty well. I don't think the sun came out at all during this one.

 
Bradford Pear
I think I wrote earlier that these were 7x11, which is not right. All the recent ones have been 7x9.5 inches.
I've been playing around to see how little silver I can get away with. This one only used 3 drops of 24% AgNO3 for the whole image.
"fixed" in 5% sodium sulfite, same as all the recent sepiaprints.

Also made a cyanotype yesterday of some birch leaves, but I'm flattening it now and am going to try hand-coloring it and drawing on it with some ink.

 

very benign chemistry. i called the company in california ( Berkeley ) that makes sun print paper (I think it is called sun print.org ) and asked them about their paper and the dangerousness of it all... was told it is just iron that is in the water and it is deemed "kid safe" by the state of California. Soon after that I became a "visiting artist" for my kids grammar school art class many years after that. I'd bring paper cut down for them and a box of stuff for photograms, and they had a blast.
 

Yeah, they aren't going to start school again this year but next fall I might make a batch for the kids in her class to use. Maybe I'll try treating some of the paper in citric acid to see if I can make some that will keep better... the paper I'm using starts to turn a bit "greenish" and not do as well after an extra day of drying. It's great if you use it within 6 or 7 hours. Who knows... a classroom full of 5 and 6 year olds, maybe some of them will remember the magic of printing out when they are older and post cool prints on photrio 50 years from now for Sean's grandkids to see
 
DWThomas said:
Not to worry -- in spring he can turn over a new leaf.
Click to expand...

It's a really interesting project .. but I'M going to have to leaf it until next' Autumn

Ken
 
Great series of xperimental photgrams!

Here's one of seed pods (sorry, no leaf) made with a single layer of carbon pigment emulsion (DAS sensitized) - 3 minutes in sunlite and warm water wash-off.

Charles
 

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CMB said:
Here's one of seed pods (sorry, no leaf) made with a single layer of carbon pigment emulsion (DAS sensitized) - 3 minutes in sunlite and warm water wash-off.
Click to expand...
That is very cool!!!! Thanks for posting it here. Is that as simple as speedball diazo screenprinting emulsion or is it something else ( I remember a photrio group purchase of some DAS from china?? )

These are also from last weekend:
Oaks ( sepiaprint negative, cyanotype positive made from it ):

Peach leaves:
 
Glad you like it. Learning a lot from your posts. Thanks.

Mine was made using standard Cyan-Magenta-Yellow Carbon pigment emulsions that were all coated on a single base. DAS sensitized yes, but not the same as the Speedball Diazo Silkscreen product.
 
Here is my first trial to color cyanotypes with acrylic colors, according to this Link: "Cyanotypes painted with acrylics" http://www.alternativephotography.com/cyanotypes-painted-with-acrylic/


Was interesting experience to mix the colors (skin tone) and try to paint....

bj68


Edit: What makes the blues deeper an gives the print a shiny finish: Put a 50% or less dilution of acrylic varnish glossy medium over it...e.g. Liquitex / Gloss Medium & Varnish https://www.liquitex.com/row/products/professional/gessoes-mediums-varnishes/gloss-medium/ but try to avoid brush strokes....
 
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