I prefer to use the serger and overlock each end.
Using a zig zag stitch on the sewing machine works just as well.
The accordion thing didn't work for me. Maybe I'm a bit anal
but I prefer the fabric to be loose so it washes evenly.
Not sure I would wash a whole bolt of fabric at once.
That's a lot of fabric. I guess it would depend on the size
of the washing machine.