- Understand the steps required to copy missing details and create new ceiling medallions or plaster enrichments.
- Be able to create a silicone rubber block mold and produce a plaster cast.
- Know how and when to use sealers and release agents.
- Recognize how to remove the cast without causing damage.
- Be aware of the steps to assemble and install new ornamental plaster work to existing substrates and surfaces.
ARTisAn Objective® Workshop MAS-05 – Casting Plaster Medallions & Enrichments
Casting Plaster Medallions & Enrichments2 Days – 8:00am to 3:00pmAmong the most dramatic of ornamental plaster forms are ceiling medallions and enrichments. Typically, medallions related stylistically to the cornice ornament also found in the room and could be created with or without a plain-run surround. These decorative units were generally attached to the substrate using plaster as an adhesive. Damaged ceiling medallions can be repaired by carefully removing representative plaster ornamentation and molding, recasting the elements, and replacing the new enrichments to align perfectly with the original pattern. This workshop will introduce students to the basics of mold making and casting replicas. Hands-on demonstrations and practice exercises include design considerations and applications for new ornamental plaster work, creating negative-form molds, mixing and pouring plaster into a mold to form enrichments, and ensuring the cast surface is free of air pockets and blemishes. Participants are encouraged to bring an object (no larger than a fist) to create a mold and produce a cast. Prior masonry experience is helpful but not required.After completing the workshop participants will:
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