Re: Kallitype Permanence&bromoil

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From: henk thijs (henk.thijs@hetnet.nl)
Date: 03/16/01-11:12:02 AM Z


Thor wrote:

>The subject of Leonardo's "Last Supper" is a curious one. Its seems he
>used an oil-based paint in this >fresco, a very rare, and disaster prone
>technique, for as we all know oil and water (the wet plaster) >don't mix.
>He must have had some kind of "plan", but art historians are hard pressed
>to come up with >what is was.

Not so sure about the statement of oil&water, ever tried bromoil printing?
It is the heart of the process, the hate/love relation of water&oil :-) ,
maybe Leonardo knew about the different adaptation of oil paint on
different degrees of humidity in the plaster.
Henk


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