Pastels on parchment

Originally Posted by
llawrence
I am considering trying out pastel drawings on parchment. There are some historic examples of this technique, notably from Etienne Liotard. I am curious about any possible issues with this. I saw one Liotard pastel on parchment at the Getty museum a couple of years back, and it looked to be in great shape after 250 years or so - though of course you never know what has or hasn't been done to conserve it. (I even remember thinking at the time that it couldn't have been an original - it was in a small side room with no guard, where any stupid kid could have come along and smeared it out of existence!)
I understand that parchment can curl and deform - is it possible to stretch parchment on bars, as one stretches linen or canvas? As a side thought, would it also be possible to do the same for a tanned hide such as leather? I imagine that tanned leather would be too acidic for long-term art, but thinking about a soft leather like suede seems like it would be a wonderful surface for working on. I'm intrigued, but of course I don't want to spend a lot of time experimenting if the technique would not be sound...
llawrence,
Here is CAMEO on parchment:
"A thin writing or drawing sheet prepared from the skin of a sheep or goat. Parchment was used as early as 2nd century BCE in Rome and the Near East. The skin is dehaired with lime then scraped, rubbed, and polished with abrasives (pumice) and fillers (chalk or talc) on one side to provide a smooth writing surface. Thin translucent sheets of parchment made from stillborn or newly born calves or lambs are called vellum. They are used for documents, fine books, drum heads, and lamp shades. The term parchment is sometimes applied to modern paper (wood pulp) products with that are finished to imitate the appearance of vellum or parchment (see vegetable parchment).
"Synonyms and Related Terms
"parchemin (Fr.); pergaminho (Port.); drumhead leather
"Hazards and Safety
"Adversely affected by moisture and high humidities.
"Susceptible to biodeterioration.
"Additional Information
"° R.Reed, Ancient Skins, Parchments and Leathers Seminar Press, London & New York, 1972
"° P. R³ck (ed), Pergament, Geschichte-Strucktur-Restaurierung-Herstellung, Sigmaringen, Jan Thorbecke Verlag, 1991. (German)
"Last updated on: 3/8/2010 9:48:47 AM"
So, if you can get some real parchment, we think you can try what you propose. It might be better to mount it on a rigid substrate, with an acrylic dispersion gel medium as you would mount canvas or paper. Also, consider the physical hazards to the material ... We would not go near any substitutes that imitate the real thing.
You could also try a chamois cloth, or sueded leather, but we can't comment on their durability.
If you want to try to find another surface for pastels, you could use a "pastel ground" or a "sandable ground," acrylic dispersion grounds made for your purpose from various manufacturers of acrylic dispersion products. Or, since there are about 1,000 suitable papers out there, look around for a maker that supplies papers with a soft surface that has a grab to it. Some "laid papers" may fit the bill.
The AMIEN Staff
ICA Art Conservation -- America's oldest regional art conservation center