how do you make a cake from not sliding on the board. Say I had a 8" round and put it on a 10" round I put icing on the board but it still moves everytime...
It may be an icing consistency issue. I make it pretty thin, like my crumb coating buttercream, smear it on, but not too much, and put the cake on it. If it's too thick, it won't hold it.
Also, it's not magic. You can't do that and then drive like a maniac, hold the cake vertical... smaller cakes, having less weight, are more likely to shift.
I always put a smear of frosting on the board before I put my cake on it. that keeps it from sliding around. HTH.
I just us icing as well, but I always make sure it sits level in the car. Knock on wood, I've never had it happen yet.
I also put a smear of icing on my board before putting the cake on it.
I use royal or cookie icing on my boards and that works much better for me, especially in hot weather.
I use glue dots to glue down my cake on the base board, they work great!
I use the glue dots as well. I just bought more at Michaels yesterday.
Royal icing will fix you problem. I buy my royal icing in powder and mixed it with water.