Hi julied,
A kilo will be more than enough. Roll out your fondant (not too thick) and measure as you go so you know when it's big enough. Then lift up one side of the fondant and slide your board underneath. Then gently lift up one side of the fondant and brush the board with a little bit of water. Lift up the other side and do the same. Give it a rub with a smoother.
Leave it for 10min or more, then take a palette knife and run it round the edges to cut off the excess fondant. Clean up your edges and smooth again. Easy as!!
HTH
There are several videos on how to do this in YouTube, the one I saw was round, but they don't cover the whole base, instead after they are done decorating the cake they put a strip of fondant around the cake to cover only the base and then trim the excess to make it pretty. HTH
i paint my board in vodka, roll out my fondant, roll the fondant up on my rolling pin and then unroll over the board sommoth and trim 
very easy!!
hehe!!! i keep the good stuff for me lol the cakes get the cheap stuff haha
Hi julied,
A kilo will be more than enough. Roll out your fondant (not too thick) and measure as you go so you know when it's big enough. Then lift up one side of the fondant and slide your board underneath. Then gently lift up one side of the fondant and brush the board with a little bit of water. Lift up the other side and do the same. Give it a rub with a smoother.
Leave it for 10min or more, then take a palette knife and run it round the edges to cut off the excess fondant. Clean up your edges and smooth again. Easy as!!
HTH
Many, many thanks to all of you, specially sugarand slice - sounds easy
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