what is the trick to getting them all the same size for a border?

roll out a chunk of fondant to an even thickness and then use a round cookie cutter (I use the back end of my decorating tip) the thicker your fondant/ the bigger your cutter the bigger your beat will be!

Once you cut out circles, just roll them in your hand and they'll all be the same size!

HTH

thanks, all i could picture was a scoop of some kind and knew that wasn't going to work.

You can also purchase molds, if you want to do a string of beads/pearls.

I roll out a long rope of fondant and cut at half-inch increments so they are all exactly the same size.

Check out www.firstimpressionsmolds.com

I have the molds and they work fine, i just want something a little bigger.
thanks for all the help.

You can use measuring spoons also...push fondant into the 1/2" spoon, run your thumb around the edge to cut away any excess, pop the fondant out and finish rolling.