I use the wilton ribbon cutter. Valleykoolcakes- I always hold the bolt on the end while I use it to make sure it doesn’t get too loose/tight while i cut my fondant. My biggest problem with it is getting frayed ends on my strips from time to time where it cuts..then I have to go back and clean them up with a knife. No problems with them not being straight though!
Nikki, So Cal, www.Facebook.com/nikkibelleperchecakes