After years of cut, move, cut, move...watch ruler slip-I found out about these rulers on a forum like this. I went and bought one and have never looked back! You true up one side and take off from there. I can cut strips like mad and in no time have all I need. I'm going to take my scrap stash and iron all of them flat, stack them and go to work with this ruler. What a fabulous tool this is. Have them all sizes but small.