I sew with a no-frills Bernina, and sometimes, an old Singer treadle machine. The Singer is an exact carbon copy of the sewing machine my mother used when she taught me to sew.
A straight line. That's all it takes to make a string quilt.
"Stop!" I'd say, when I'd catch them trying to rip out a seam from the front of misaligned blocks, "There's an easier way to undo." (Undo, they understood undo.) They learned to undo from the back using the simple pick and tug process my mother taught me. No scissors or clips needed.
They all learned how to use hair clips to hold the binding in place while they stitched it by hand. "Everything has two or more uses." That was my class motto.
This was the only time I ever used new fabric for a string quilt, courtesy of an anonymous donor's $200 gift card. "For the quilts." That's all the card said.
And people donated their leftover fabric stashes, too.
I used four blocks to demonstrate the entire quilt-making process.
"String Quilts" by Pat Martinez-Lopez.