Sennelier Egg Tempera and Acrylic Gesso panelsApproveRejectUn-ApproveSubscribeUn-Unsubscribe
Question asked 2017-03-08 11:44:47 ...
Most recent comment 2017-03-15 21:04:00
Grounds / Priming
i have read the descriptions for how to make real ET paint (fairly easy) and real ET panels with rabbit skin glue and whiting (very laborious).
I cannot believe that lazy people like me who buy ET in tubes still have to make a panel. Panels with true gesso on are availale from few retailers and are expensive. Sennelier make passing reference to use on canvas with acrylic gesso, but their information is very poor.
Are you able to offer advice on using these tubed ET paints with commercially available wood panels with acrylic gesso, please?
Answers and Comments
I have used a few suppliers of panels with real chalk glue
grounds for one-three day workshops that I give and have found them quite
affordable. A quick Google search should yield a few suppliers to choose from.
Make sure to include genuine, real, or true in your search.
I cannot recommend painting egg tempera on canvas covered
with acrylic gesso. Egg tempera becomes increasingly brittle over time and it
should really only be used on a rigid support. However, tubed egg tempera paints
are always egg-oil emulsions to my knowledge. These may be slightly more
flexible than pure egg tempera. One would really need to preform tests for
adhesion and cracking. Even if the tests were positive, I would only suggest
painting your tempera very thinly and in a few layers to minimizes brittleness
Acrylic dispersions grounds are generally just not absorbent
enough to ensure the adhesion of egg tempera paint. Of course, not all acrylic
grounds are the same and you could experiment but I do not have good hope. As
above, the egg-oil emulsions in the tubes may fare a bit better, but I doubt
As to purchased panels outside of the boutique genuine
glue-chalk grounds, I would you should test some of the better. I would test
some of the clayboards as opposed to the panels covered with acrylic “gesso”. I
know that some of the suppliers suggest that these acrylic gessoboards are
suitable as an egg tempera substrate but this has not been my experience when
used with traditional, historical egg tempera techniques. As above, however,
you should test to see if any of these fare better with the tubed egg-oil tubed
Koo, as always. Thanks for the informative post.
Thanks again Koo.
I do want to point out that egg tempera made from watercolor and egg yolk will be ever so slightly more water sensitive than pure egg tempera. This is unlikely to be a major issue, though.
I really only mentioned the solubility issue for completeness.
The amount of gum Arabic is likely very small in proportion to the egg in
actual practice. Yes, egg yolk is an emulsion containing proteins and oils (as
well as many other components including lecithin as an emulsifier). The egg
yolk film becomes water resistant rather quickly and more so overtime. Gum Arabic
is more brittle than egg at least initially. I am less sure about the precise aspects
of the long-term aging of gum Arabic but I doubt that it becomes drastically
more brittle overtime. Again, the small percentage of the gum that would be in
the final egg tempera paint would probably not greatly change the relative
brittleness. Again, this is all just mentioned for full disclosure.
In retrospect, I think that my answer was far less than
satisfactory. I will correspond with some individuals more familiar with the
chemistry of gum Arabic and give you a more precise answer.
Hi Jeremy...I have forwarded your request along to our IT point person. In short we would love to have this type of feature associated with our forum and perhaps there is a way to do it. So stay tuned.
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