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MITRA Forum Question Details

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  • (Imitation) goldleaf and acrylic mediumApproveRejectUn-ApproveSubscribeUn-Unsubscribe
    Question asked 2018-04-30 18:27:15 ... Most recent comment 2018-04-30 21:01:41
    Acrylic Gilding

    Is it sound to use acrylic medium instead of the regular gilding paste to attach imitation goldleaf to a rigid, gessoed support? Is it fine to put acrylic on top of said gilding? Would there be any archival problems with such a solution?‚Äč

Answers and Comments

  • EditDeleteModerator Answer

    Some acrylic mediums can induce tarnishing with imitation leaf, resulting in a blue-green patina. The tarnish is not altogether unappealing, but may not be the desired effect.

    Matthew Kinsey, Utrecht Art Supplies
    2018-04-30 20:57:27
  • EditDeleteModerator Answer

    Acrylic dispersion mediums are fine mordants/adhesives for metal leaf. I have much more concern about the imitation gold leaf. These readily oxidize even under solvent bourn varnishes. They are really not stable in terms of color and they easily tarnish. If you really need to use these copper containing metal leaves, I suggest covering them with a MSA varnish rather than acrylic dispersion mediums alone. Dispersions generally create a film that is less continuous than solvent bourn acrylics and are less able to postpone tarnishing. Also, as Matthew mentions, the aqueous system and resultant pH of dispersions can patinate rather quickly.

    Brian Baade
    2018-04-30 21:01:41

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