Originally Posted by
misskira
I feel I get more accurate cuts when I fold selvage to selvage and then fold again, salvages to fold for 4 layers. My fabric stays more stable and I'm less likely to have my ruler shift. A sharp blade helps a ton too.
While a larger mat is desirable, you can cut on a 12x12 by doing this. I do when I travel with my cutting tools. I love my June Tailor shape cutter - a ruler with slots to guide the blade, though you don't need that either if you can cut straighter than I do. Put your mat on a very stable surface, fold the fabric twice very carefully, and start cutting. Shake out the first one to see if it is straight, no V in the center and you're good to go. I've only seen one V and that was recently when I was trying to do some cutting while not feeling well. Good luck. You have what you need if you have the mat, a sharp rotary blade and a ruler over 12".