how do you make fondant icing really smooth

[pud1]

am icing a square cake. how do i make the fondant icing really smooth at the corners.

Put knife in cup of boiling water - and then smooth out.

It takes a lot of practice.

You sort of need to lift it up as you are going around it with your hands and smooth it upwards rather than down.

It will work - I have just done an 8" and a 12" cake.

Have you got a smoother?

Please do not put a knife in a cup of hot water - this will mark the fondant.

what is a smoother???

a smoother