The long manufacturing process of polychromatic Scagliola begins with the molding of the original design on the worksurface. Incisions and carvings create gaps that are filled with gypsum, glue, and natural pigments to form plaster.
After the first pass of plaster is dry, the surface is polished and new incisions and carvings are added.
The process continues using the same approach: the plaster is carved and excess scagliola is removed, new gypsum and natural pigments are added, and drying and polishing occur. The cycle continues until the design is complete.
Once the design with colorful plaster is finished, any excess material is removed.
Oftentimes, black plaster (“scagliola nera”) is added to create depth.
After a final drying phase, the final product is polished until the surface is flat and shiny.
At this stage, the part is ready to be buffed for the final finish. Protective oils or beeswax are often used to provide a unique silky and soft effect