Architectural Restoration: Making a Rubber Mold of a Plaster Column

This video tutorial features the making of a brush-on rubber site mold. Some of the columns in this commercial building are damaged -- a brush-on rubber mold with plaster mold shell is made of an intact column in order to cast plaster replacements for the damaged columns. 

 

Mold Materials: Poly PT Flex 20 (a soft, polyurethane rubber) and a Plaster/Burlap Two-Part Mold Shell. A full list of materials used are listed at the end of the video. 

PT Flex Series