|David Page Coffin' book, on page 105-106 describes Adriana Lucas's method for turning collar points. Adriana Lucas, "a master shirtmaker in NYC", turns by hand. She stitches to the collar point, turns and stitches up the side of the collar, leaving a very sharp point. Then she closely trims the interfacing only at the point and a tiny bit on each side of the stitching. She folds the point down and pinches tight, creasing the tip. She then folds in each side seam over the tightly held point and pinches these folds again very tightly. Holding the collar point and folded side seams between her forefinger and thumb the collar is turned right side out. Using a needle the fabric left inside the point is gently coaxed out to form the point.
Using this method I formed the sharpest, easiest points I have ever done, very much to my surprise. I tried an alternative method of poking the fabric from the inside to form the point and got a rounded blob that I had to fix using Ms. Lucas's method! Guess I'll retire my orange stick back to the nail kit.