Everyone makes needleturn so complicated, its silly. Our fore mothers worked it out, it's just needle, thread and fabric. I've been needle turning for 30yrs and have never needed glue, or fray check. You cut a small seam allowance, clip with fine scissors as you approach that curve, clipping to within a few threads of the sewing line, and increase your number of stitches as you work any curve or corner. Amazes me all these so called experts recommend products and methods, the only thing you need to perfect needleturn is PRACTICE!!