So make sure the machine is clean and in proper state when starting a vinyl project.
Proper tension for sewing vinyl.
The bobbin tension is only a part of the sewing machine tension and must work in conjunction with the needle tension.
A machine with the detachable bobbin case.
Nylon is the best second best would be 100 polyester.
To obtain the correct tension setting make a test with the fabric and thread you plan to use for your project so that you can adjust the tension properly.
When sewing with heavy thread you tighten the tension lower bobbin tension adjustment.
Your stitch length when sewing vinyl fabric should be longer than you would use on regular fabric.
Additionally we feature all these tips and more in our video tips for sewing vinyl fabric.
Stitch length for sewing vinyl.
Balanced machine stitches machine stitches should look the same on both sides of the seam when you sew patchwork pieces together or when you machine quilt through the quilt s top batting and backing.
Getting just the right amount of tension requires adjusting the tension dial and checking the stitches.
Bobbin thread showing on top.
The trick to sewing vinyl is using the proper tools and adjusting your machine to the proper settings.
When sewing thick fabrics you tighten the tension.
As for thread for sewing vinyl on most vinyl you can use general purpose thread but if you expect the seam will experience a bit of a stress use heavy duty thread.
Thread tension that is too loose will cause stitches to unravel while too tight of a tension will cause the fabric to pucker.
If the sewing is all wonky on the face top of the fabric and you have ruled out all the possible causes you will have no other way but to adjust this tension.
Think of your stitching as if there were no thread in the holes created by the sewing machine needle those holes become a tear strip which will weaken the vinyl and make it prone to tearing.