25cm Square Loose-Based Cake Tin 5 "Great!" Mrs Darji 29 April 2013 I got this tin to make my son's birthday cake. It was fab! I lined the tin with greaseproof paper (bottom and sides) just to make sure it does not leak. The results were great. The cake came out very easily. I also used the loose base to help me place each layer of the cake on top of each other.