In this video tutorial on sewing with twin needles, an attempt was made to debunk the myth that they can only be sewn on cotton fabric.
I performed the most simple and well-known operations on thin stretch rayon satin, synthetic chiffon, stretch denim and drape ...
I used needles with a distance of 2 and 4 mm between them, as well as a special and regular universal foot.
And that is not all.
I didn’t pay attention to the quality of the threads, but poor quality threads quickly got confused and after each line I had to refill.
Therefore, I recommend that you buy branded threads or threads for machine embroidery and do not use top threads of different quality in one line.
To the bottom thread, such stringent requirements, I think, should not be presented.
About dressing: we fill two threads as one and breed them on different needle eyes.
In addition, to avoid tangling of threads, it is advisable to sew at a low speed.
In conclusion, I will say that one-stitch bartacks are possible only on straight lines.
And we take the cords a few centimeters longer than the lines and fix them separately after all the lines are ready.
If you want to make a part with tucks made with double needles with a cord, then it is recommended to cut out this part after all the stitches are made and secured.
An example of finishing a coquette with double stitches is the Lolita dress, the pattern of which you can download almost free of charge and without registration. http://cuturie.com.ua/vikroieka-platya-lolita.html