From: Sandy King (sanking@clemson.edu)
Date: 08/27/03-08:12:04 AM Z
Kerik,
Yes, I meant Cleanprint Vellum, not Everclear.
Since posting the last message on this I also received the Clearprint
20 Lb Vellum and have made some prints with it as well.
Both of the vellums I used, which include the Staedtler Plain Vellum
(very thin) and the Clearprint 20 Lb Vellum worked very well in
kallitype printing. Both cleared well and gave nice final images,
though as you mention the heavier Clearprint is much easier to work
with.
However, I frankly don't see any improvement with the vellums in
terms of sharpness and detail with comparison prints made on
Stonhenge. After adjusting time of exposure to give prints of equal
density and contrast I made several comparison prints at different
size, from 5X7" to 13X19", on Clearprint 20 Lb Vellum and Stonhenge
(Rising, White). After the prints dried I compared them carefully, by
eye and with a loupe, and must say that in terms of sharpness and
detail both papers look the same to me.
The only paper I have used for kallitype printing that is clearly
superior to Stonhenge in terms of image sharpness is Fabriano Uno.
Unfortunately I can not get a very high Dmax with Uno, even after
soaking in oxalic acid.
Sandy
> > After discussions on the best definition paper for Pt/Pd I ordered
>> some Everclear and Mars vellum to try with kallitype. I have not yet
>> received the Everclear vellum, but something called Staedtler Plain
>> Vellum, described as a 100% Rag Vellum, in 18X24" sheets, arrived
>> yesterday, apparently as a substitue for the Mars vellum.
>
>Sandy, I think you mean Clearprint rather than Everclear! And that is the
>correct Staedtler. Same stuff I've got.
>
>> Today I printed with it. It is very thin, but appeared to accept the
>> sensitizing solution well, and smoothed out ok in the vacuum easel.
>> It developed fine, without any spots, and cleared and toned well.
>> Overall I would say that it worked great in terms of producing a nice
>> final image, but is somewhat difficult to work with being so thin.
>
>If you get the Clearprint 1020 it is thicker and easier to work with than
>the Staedtler or Clearprint 1000. For these thin vellum papers I put a piece
>of white opaque plexiglass in the bottom of my tray and use that to support
>and lift the print. I've had no problems printing 14x17 and 12x20 this way.
>
>> Thought I would mention this primarily because of the fact that there
>> were absolutely none of the black spots mentioned in some of the
>> previous conversations on printing Pt/Pd on vellums
>
>Clay has a batch that prints clean. There seem to be some batches more prone
>to spots than others.
>
>Kerik
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