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MITRA Forum Question Details

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  • Tempera grassa groundApproveRejectUn-ApproveSubscribeUn-Unsubscribe
    Question asked 2019-11-03 17:58:26 ... Most recent comment 2019-11-03 22:52:13
    Egg Tempera Grounds / Priming Oil Paint
    Question

    ​Dear MITRA administrator,

    Which ground would you suggest for painting with egg-oil emulsion (tempera grassa)?

    Ground should go on rigid support like wood panel. Emulsion ingradients are: linseed oil, egg and water in different ratios, nothing else.

    Damir Pusic.

Answers and Comments
  • EditDeleteModerator Answer

    In general, I would suggest a traditional chalk-glue ground or traditional true gesso (Gypsum in animal glue) ground on a stable and rigid support. While the addition of oil is often though to allow for a wider range of ground but especially substrates but my experience has been that unless the oil component is exceedingly high (and even then this is really no guarantee) it is still best thought of as a paint requiring a rigid support with an absorbent ground. I have not read any reliable reports, and certainly no comprehensive studies, to show that these mixed, emulsion media are appropriate for supports that are more flexible. Much of the early 20th century experimentation with these mixed emulsions; especially on flexible supports have had rather disastrous results.

    Brian Baade
    2019-11-03 22:41:11
  • EditDeleteModerator Answer

    Of course, a ground with a similar proportion of protein and oil would also be appropriate. I would expect that a half-chalk ground (an oil and glue emulsion ground) would likely be perfectly appropriate for such a paint medium.

    Honestly, I would even suspect that a lean acrylic dispersion ground on a rigid substrate would likely be fine but this is one of areas where I am not sure if enough work has been done to determine the long-term longevity of such systems. I will send out a few feelers around to see if there is any data on this issue.

    Brian Baade
    2019-11-03 22:52:13
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