Boarder Quilt

What is an easy way to cut (along the selvage edge) long strips of quilting fabric?
I have to cut two strips 6 1 / 2 "of and 76 cm wide along the borders of the quilt aside my back and I want to make sure it's as straight as I can get it.My cutting base is only 17 "by 23". I would like to receive suggestions in an easy go of cutting the strips.
I fold the fabric in quarters and then cut with my rotary cutter. I love my cutter rotary mat. I use it in all aspects of sewing. I recommend it to anyone who sews … investing in larger cutting mat you can afford. -Melissa Grand Decoration an impressive home. http://www.DecorateMyHome.net
