Re: [pinhole-discussion] problems with cyanotypes
In a message dated 10/23/02 8:40:41 PM, neuhausph...@aol.com writes: Not really...the intense blue achieved with the H2O2 bath just quick forces the dark blue that will naturally occur with normal drying...kind of like a preview. Exactly leezy
Re: [pinhole-discussion] problems with cyanotypes
When a cyanotype is made it looks gorgeous when wet. As it dries it looks lighter. After the cyanotyoe is dry the pigment (prussian blue) oxidizes and gradually turns darker. hydrogen peroxide oxidized the pigment immediately. Its not the drying process that makes it go darker - its the gradual oxidation of the pigment. H2O2 will get the print as dark as it will ever be. Gord On Wed, 23 Oct 2002 neuhausph...@aol.com wrote: Not really...the intense blue achieved with the H2O2 bath just quick forces the dark blue that will naturally occur with normal drying...kind of like a preview. Mike In a message dated 10/21/02 12:30:49 PM, glsm...@yahoo.com writes: My understanding is that the blue will reduce in intensity after drying. Is this not true? Cheers - george ___ Post to the list as PLAIN TEXT only - no HTML Pinhole-Discussion mailing list Pinhole-Discussion@p at ??? unsubscribe or change your account at http://www.???/discussion/ - Gordon J. Holtslander Dept. of Biology hol...@duke.usask.ca112 Science Place http://duke.usask.ca/~holtsgUniversity of Saskatchewan Tel (306) 966-4433 Saskatoon, Saskatchewan Fax (306) 966-4461 Canada S7N 5E2 -
Re: [pinhole-discussion] problems with cyanotypes
Cyanotype is very fussy about the paper used. Buffered papers are really bad for it. What kind of paper are you using? I use a Stonehenge paper, works very well. could be underexposed. What are you using to expose it? UV lights, Sunlight? Gord On Thu, 17 Oct 2002 bendur...@aol.com wrote: Hi Could anyone tell me the image gets washed away, when you rince your cyantype. And also what you can do about it. Cheers Ben - Gordon J. Holtslander Dept. of Biology hol...@duke.usask.ca112 Science Place http://duke.usask.ca/~holtsgUniversity of Saskatchewan Tel (306) 966-4433 Saskatoon, Saskatchewan Fax (306) 966-4461 Canada S7N 5E2 -
Re: [pinhole-discussion] problems with cyanotypes
The chemistry must be mixed EXACTLY according to directions. Part A and part B must be combined in equal amounts JUST before applying. ***The paper must be bone dry after applying chemistry and before putting on the neg. and exposing. The exposure should be long enough for the image (by inspection) begins to turn grey...and then some. Wash in cold water until the water is clear. You may make a solution of a few drops of hydrogen peroxide in a tray of water. The image will turn an intense blue. Good Luck. leezy
Re: [pinhole-discussion] problems with cyanotypes
Ben, Try a longer exposure, for if the image washes away it was not exposed long enough. Also, as the image dries, it intensifies. A quick check of this is to put a washed test print in a drymount press or print dryer. Don --- Ingo Guenther ingoguent...@web.de wrote: Hi Ben, at first try to use water in a tray, not rinse water. Change the water 8 times. Dunk the cyano careful face down with very low agitation in the tray for 5 minutes. If this not will work, change (at second) to a other paper. Regards, Ingo - Original Message - From: bendur...@aol.com To: pinhole-discussion@p at ??? Sent: Thursday, October 17, 2002 5:29 PM Subject: Re: [pinhole-discussion] problems with cyanotypes Hi Could anyone tell me the image gets washed away, when you rince your cyantype. And also what you can do about it. Cheers Ben ___ Post to the list as PLAIN TEXT only - no HTML Pinhole-Discussion mailing list Pinhole-Discussion@p at ??? unsubscribe or change your account at http://www.???/discussion/ __ Do you Yahoo!? Y! Web Hosting - Let the expert host your web site http://webhosting.yahoo.com/
Re: [pinhole-discussion] problems with cyanotypes
Two of the more common cyanotype problems are alkaline water and/or a bad paper choice. Try adding a few CC of stop bath to your first rinse. If that fixes your problem, then you know your water source is alkaline. Cyanotype need nuetral or acidic wash water. If that isn't your problem, then you need to try a different paper. Reves BFK is a widely available paper that will work with cyanotype. It isn't my favorite paper, but you can get a sheet almost anywhere. papers for cyanotype need to be nuetral or acidic (just like the wash). many papers are made with large amounts of buffer. This is usually strongly alkaline, and thus an unhappy match for cyanotype. Some papers are simply too hard (non absorbant) for a good cyanotype photograph. My favorote paper for cyanotype is Cranes Platinotype available from Bostick and Sullivan http://www.bostick-sullivan.com/ The above assume that by washed away you mean faded during washing. If you mean that your image is totally disappearing, then I would be woriied that your chemicals are incorrect or bad. On Thursday, October 17, 2002, at 08:29 AM, bendur...@aol.com wrote: Hi Could anyone tell me the image gets washed away, when you rince your cyantype. And also what you can do about it. Cheers Ben
Re: [pinhole-discussion] problems with cyanotypes
Hi Ben, at first try to use water in a tray, not rinse water. Change the water 8 times. Dunk the cyano careful face down with very low agitation in the tray for 5 minutes. If this not will work, change (at second) to a other paper. Regards, Ingo - Original Message - From: bendur...@aol.com To: pinhole-discussion@p at ??? Sent: Thursday, October 17, 2002 5:29 PM Subject: Re: [pinhole-discussion] problems with cyanotypes Hi Could anyone tell me the image gets washed away, when you rince your cyantype. And also what you can do about it. Cheers Ben
Re: [pinhole-discussion] problems with cyanotypes
Hi Ben, at first try to use still water in a tray, not rinse water. Change the water for 8 times. Dunk the cyano careful facedown in the tray, without great agitation. If this not work change - Original Message - From: bendur...@aol.com To: pinhole-discussion@p at ??? Sent: Thursday, October 17, 2002 5:29 PM Subject: Re: [pinhole-discussion] problems with cyanotypes Hi Could anyone tell me the image gets washed away, when you rince your cyantype. And also what you can do about it. Cheers Ben
Re: [pinhole-discussion] problems with cyanotypes
Hi Could anyone tell me the image gets washed away, when you rince your cyantype. And also what you can do about it. Cheers Ben
