What clay tool should I use for my fondant in order to get the perfect size for a rope boarder for a wedding cake?

Well I use a clay extruder, by " Makin's Clay" I found my at Michaels the arts and craft store, I'm sure you can find them else where by other names, but it comes with many diffrent tips, you just fill it with fondant and twist it out use the rope tip. I hope that little bit of info helps you!