First picture I used Marti Michell ruler for 2.5 inch strips, and they finished at 12 inches. A King size quilt that went together in less than a week.
2nd picture is a curved log cabin I made using the creative grids ruler, I used a jelly roll for the color and the the background is cut at 1.5 inches wide to achieve the curved look.
I loveeeeee log cabin quilts, the most accurate method I have found is Marti Michell’s way and her rulers make it quick and easy. Good luck with your quilt and don’t forget to share your pictures !