Sometimes you want REALLY skinny, narrow tubes of fabric. I learned this technique from Roberta Carr years ago, and share it in this video. Give it a try – being SURE to stitch WIDER as you begin on the bias-cut tube.
Recently, with an adult student, I had had her make some tie ends by folding in half wrong sides together, then in half and topstitch. The fabric was a lightweight crepe, but it was still too stiff. I have NO idea why I didn't immediately go the direction of these bias-cut skinny turned tubes, but in the middle of the night, it came to me... SKINNY TURNED TUBES would be perfect. And, indeed...this technique was the perfect solution!
The picture of the flower finished off with skinny tube comes from Roberta’s book: Couture: the Art of Fine Sewing…a GREAT book you can find at this link: https://www.amazon.com/Couture-Sewing-Roberta-C-Carr/dp/0935278281
This technique will be perfect for spaghetti straps on sundresses. Even think multiple straps - or how about even braiding 3 skinny turned tubes together to make each strap.
I'd love to see pictures/hear your comments if you try this. The best, main tip I can give you is to be SURE to start wider as I show in my video.
EDIT for Clarification thanks to the Comment /Question as posted below.
A Loop Turner can also be used and is a very inexpensive, handy tool and can be used instead of the needle and thread. To use, you would insert it up from the skinny end, and grag a reasonable 'hunk' of single layer fabric at the cone edge, then pull, making it all turn in exactly as I show in the video.
I might make a suggestion though...order two Loop Turners. The hook mechanism at the end is not very heavy-duty and very honestly, don't be surprised if it breaks with hard use. Find Loop Turners HERE at my website. I keep them handy in my Studio to also go in and 'grab' elastic when it has been 'lost' within a casing, as often happens with teaching kids. :)