Combine butter and 1/2 cup sugar until fluffy. Beat in flour and cornstarch until well mixed. Wrap and refrigerate at least 2 hours. Preheat oven to 325°. Roll dough in 1-inch balls. Place on ungreased sheet. Bake 8 to 10 minutes. Firm by golden. Cool and remove to a rack. In small bowl, mix remaining 1 1/2 cups sugar and 3 tablespoons orange juice. Makes 1 cup glaze. Place wax paper under rack and spoon on glaze. Let dry. These freeze well. 3 dozen.