cutting/leveling edges of material
Do you quilters use the lines on your cutting board to level/straighten the edges of the material or how do you do it? Someone told me not to use the lines on the cutting board, just use the lines on the ruler to make sure material is cut straight. But, how do I know for sure my ruler is straight, even having a ruler just a little off,will make my cut uneven. What's the best way to cut?
Thanks for your advice
Sharon