Originally Posted by Sparky
Typically I use smaller amounts of fabric so maybe this helps, but I think you are having a problem with the fabric being off grain. Don't assume the fold from the bolt is accurate. To those of you who were horrified when your fabric was ripped at the fabric store, it will ensure a straight grain. The salvages are not what to use. You should use the torn width of the fabric, remove the selvages then fold in half and press the center, it probably will not be the same as how it was folded on the bolt. Hope this helps.
I don't remove my selvages because I often may not use all the fabric up and years later I may want to know what type of fabric it is and if I can get more. If I took the selvage off I'd have to pin it to any leftover fabric and with my luck the pins would rust or I'd end up poking myself and bleeding all over it. Just a thought.