My new sewing machine froze up. I was stitching sequin material. Can I fix it?

Machine settings usually need to be re-adjusted when the project materials change, ie the needle size & type, the type/weight of thread, the presser foot pressure, the thread tension, the stitch length, etc. Sewing woven cotton is very different from sewing silk or chiffon. Test on scraps of the fabric before actually sewing on the garment. Even adding tissue paper to the stitching will help prevent fabric puckering.

Top 10 Tips for Sewing With Silk

How To Sew With Silk And Silklike Fabrics

try increasing/decreasing the needle thread tension for the added material thickness
use scrap material until you get it right

First thing to do is install a brand new needle.


Basic Maintenance Tension Skipped Stitches

What to Do If Your Sewing Machine Is Skipping Stitches

10 reasons for skipped stitches

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A transcript from the Elna SU manual reads as follows, and the manual can be viewed on line at http://sewingonline.co.uk/instructions/elnasp/

First make a few trial runs with a scrap of material exactly as the buttonhole will be stitched, with the machine adjusted as you intend to use it.
1. Use the embroidery and buttonhole foot. It can be chnged without a screwdriver by using the fixation screw.- With the stitch width knob at "0", turn the selector to zigzag "1".
2. De-center the needle to the left.
3. Set the stitch width knob at 2, with the solid mark on top.
4. Set the stitch length dial between 1/2 and 1/4.
5. a) Mark the desired length on the material.
b) Sew the first side of the buttonhole. Stop with the needle in the material and the mark (right).
c) Raise the foot and pivot the material round the needle. Lower the foot and raise the needle.
6. a) Set the stitch width knob at 4.
b) Sew a few stitches. Raise the needle.
7. a) Set the stitch width knob at 2.
b) Sew the second side and stop just short of the length of the first. Raise the needle.
8. a) Set the stitch width knob at 4.
b) Finish off the buttonhole by sewing a few stitches. Raise the needle.
9. a) Set the stitch width knob at "0".
b) Sew a few stitches to fasten the threads, holding the material back by hand.
10. Open with the buttonhole knife, which you will find in the accessory box.

try adjusting the bar that the presser foot is attached to , check in your manual for the instructions to do the adjustment..

try adjusting the top thread tension and see if that helps
also try changing the thread.
also change the needle--make sure it's the right needle for the fabric
being sewed.

it sounds like the machine needs to be checked at a sewing
machine shop to see what the problem is for sure

Have you tried putting a stabilizer under your mylar material?

Frist make sure that the bobbin is in correctly I know it sounds silly but check I have at least 2 machines a week or more come in and this is all that is wrong with them. if that is ok then check the bobbin case the black thing the bobbin sets in and see if it is nicked or damaged that is what normally causes this problem

You can adjust the pressure foot(not footpedal)which puts the prsure on the foot by the needle. Also try altering the stitch length. If the stitches are skipping on silky fabric or knitted fabrics try using tissue and sewing onto that directly then tearing it off afterwards.