Answer: plasterofparis

AnswerCrossword Clue
PLASTEROFPARISArtist's compound
PLASTEROFPARISCast material
PLASTEROFPARISSubstance used for moldings
PLASTEROFPARISComposition by Helen's abductor?
PLASTEROFPARISGypsum
PLASTEROFPARISIt makes a cast