Often as not, I eyeball stitching lines when quilting. There are times, however, when precision is important and that's when I reach for my hera marker.
Until a quilting retreat a couple of years ago, I didn't even know there was such a thing as a hera marker. I'm not keen on marking the right side of fabric with pencils / pens / chalk - just in case they don't come off. Also because removing the marks is another step in the process, and I'm basically lazy.
There are possibly different brands of hera markers. I honestly don't know. Mine's made by Clover, because that's what was for sale at the quilting retreat.
As you can imagine, the creases don't remain in the fabric indefinitely - they disappear after a while, so perhaps hera markers are best suited to small projects.
It's easy to use a hera marker to make straight lines - just run it along the edge of a ruler, as you would a pencil.
You might find the following links helpful...
What tips, or horror stories, do you have for marking fabrics?
The photos in this post are sneak peeks of an upcoming tutorial. Stay tuned...