Good for you spreading this important information. I have over 30 years experience in the high end of the fashion industry as a designer and pattern drafter in Toronto. We often used cotton interlock and wool jersey in our lines and stablizing the shoulders and back neck is SO IMPORTANT. Any time I buy clothes elsewhere or online I'm always disappointed to see no one doing it (usually imports). I have a growing pile of tops I need to hand-sew stabilizing tapes into now! I won't even wear them until I do that. Even during the sewing process, the back neck can stretch out beyond what it's supposed to be, so the sewers get that tape on ASAP and carefully handle it before they get the chance to do it. I'm not familiar with this method you're doing, but we use 1/4" twill tape or a clear silicon tape and sew it just inside the stitching line before they seam the shoulders or finish the neckline however it'll be. When we make our patterns, we write those measurements on the pattern pieces (the raw shoulder seam length and raw back neckline measurement) and put them on the spec sheets that we give to the sample sewers and the contractors for the production. This is an important step that makes the difference between good quality clothing that lasts for years and cheap fast fashion that looks shabby in no time.
This is beyond good! I couldn’t figure out how a T-shirt that had this was made. Thank you. And such an attainable finish with fabric from the project and a straight stitch
I use a straight stitch! I've never had any trouble with the front of the neckline not stretching enough to still get it over my head. I definitely would use a zigzag for a turtle neck or something with a tighter neckline.