If I want to cover some foamboard in fondant what do I need to do to the foamboard before I put the fondant on? Can I just put a thin coat of buttercream? I don't want the paper under the fondant to bubble.
TIA
Melissa

When I do it, I cover the foam with contact paper, spritz it with water, then cover with fondant.

I brush on a dilute mixture of water and piping gel.

I brush some corn syrup on the board, then cover it with fondant.

Thanks everyone it looks like there are several options I can do. I may end up covering it w/ contact paper because I am using several pieces together so that it will be thick enough and the contact paper would hold my foamboard together also.
Melissa

I am very curious about this covering a board with fondant. What about when you cut the cake, do you also cut into the fondant? How does that work out? I would like to try it sometime, but this came to my mind and wonder if it poses a problem with the cutting at all.

beemarie,
Actually the foamboard I will be covering will be for the handle of the guitar so nobody will be eating this part. I am planning to put some bamboo stickes inside the foamboard to "stick" into the cake and put some supports under the handle to hold it up level w/ the heighth of the cake

Thanks everybody! This definitely cleared up the fondant covered board up in my mind. I was wondering how you all did this.