Do you pull a thread or tear it? I pull threads, my friend who also quilts, tears her fabric.

If it is a big enough piece - I will tear it.

I have up to a two ft ruler that I use :D:D:D

I use a ruler.

But using a ruler - how do you know you've got it straight with the grain? Or isn't that too important in quilting?

I use my ruler. As long as I have a 90 degree angle to the salvage edge it is OK.

Exactly what I was going to say!

I do same at littlehud and lucy inthe sky.

When I made clothing, I always pulled a thread to straighten fabric. In quilting I usually use a ruler like others have said. The grain does not have to be as perfect in quilting, but should be in the general area.

That is what I do as well.