Purple Cupcakes Foam Ball Halves - Pack of 6 Pack of 6 foam ball halves. Use to create domed cupcakes toppers with ease. How to use: Roll out sugarpaste that has been strengthened with gum tragacanth, evenly to approx 3mm thick. Use round cutters for sugarpaste to create a dome on top of the foam halves. A cutter approx 78mm will create a large dome and approx 68mm, a smaller dome. Place paste centrally on top of foam and smooth over until paste is neat and even. Sit the dome of paste on top of cupcake using buttercream. Add any embossed detailing before initially rolling out. The domes may be made in advance to allow time to dry. Dimensions: 69mm dia base x 30mm (H)