Got a block of RKT - or will tomorrow - and I need to be able to attached sheets of fondant to it. I was going to ice underneath it, but I'm thinking it will want to fall. Fondant will be about 1/4 " thick. Should I bring it over the top of the block some? The sides are about 8" wide by 12" high.
I think you can coat the RKT with buttercream and it will stick. I just did a wine box cake and the box sides were fondant - they stuck to the buttercream just fine.
Are the sheets going to be dried? You can use royal icing for that.
I like to use melted chocolate to hold fondant panels to RKTS.
I didn't see a message reference number or anything like that, but see the one I posted yesterday titled "RKT - Chocolate" about melting chocolate. I like the idea of using it under the fondant, but not if it is going to turn into ganache-clay.