Which cake board is best for me? Cardboards - Used in between tiers for support & dessert cakes. Not suitable for heavy or tiered cakes. Budget Boards - 3mm solid cardboard and finished in a gloss top, cost effective and look brilliant. They will hold small cakes with minimal flex. Compressed Boards - 5mm thick compressed board, will hold small to medium sized cakes. A cheaper option without compromising on style. Masonite Boards - Made from heavy duty 5mm timber masonite, suitable for all styles of cake. Drum Boards - Super heavy duty 10mm timber masonite.