t

Thanks so much to Jackie from the American College of Building Arts in Charleston, South Carolina for sharing the details of this great project with us.

A 3-D scan was made of the ornamental plaster in the steinway building in New York before it was demolished. Plaster is reconstructed superbly.

Design is traced from the 3-D scan

You may have just seen this picture, but I wanted to put the whole history on one page. Design is traced from the 3-D scan.

3-D scan shows the depth of this rosette

Print out from the 3-D scan shows the depth of this rosette.

template is made to carve the filigree, or intricate design, into the clay model

A template is made to carve the filigree, or intricate design, into the clay model.

Clay is shaped into a circle

Clay is shaped into a circle and marked off into six slices.

Template is used to mark off the filigree

Template is used to mark off the filigree.

More marking and shaping

More marking and shaping.

Center is elevated

Center is elevated.

More details of the clay model Ornamental plaster rosette how to the paint was carefully scraped off Ornamental plaster in South Carolina Clay model for ornamental plaster rosette

Finished rosette, prepared for casting

Backup made, mold rubber poured

Backup made, mold rubber poured.

Rubber mold

Rubber mold

Cast is made with molding plaster

Cast is made with molding plaster.

Lay out for the molding in the ceiling coffer

Lay out for the molding in the ceiling coffer.

Molding is made and cut for casting

Molding is made and cut for casting.

Plaster coffer

Plaster coffer.

Mold backup is made for casting 2 coffers at a time

Mold backup is made for casting 2 coffers at a time.

the paint was carefully scraped off

Rosettes are stuck by scoring the plaster and using molding plaster. Outstanding workmanship !

American College of Building Arts website.

Wikipedia article about American College of Building Arts