The thread in the needle has started to snap after a few stitches. I am sewing curtains with thermal linings. finished one curtain ok. problem with second one. could it be needle.

As long as it fits nicely through the eye of the needle, you can use any thread you wish. This is a heavy duty industrial machine.

If the needle is hitting something, make sure you have the machine set for straight stitch and the needle is in the center position. If it is still hitting and breaking, then the machine is out of adjustment and needs to be repaired.

Check your thread tension isn't too tight, try on a piece of similar fabric that you are going to use, try sewing a line of stitches, if the thread snaps, change your tension number, then sew another line with your different tension number, try this until you can stitch without the thread snapping, it could be that your bobbin tension is too tight. Can you check your machine manual, it could even be the needle or the thread that's wrong for your fabric. But I would say, check your tension.
Hope this helps.

The top thread breaks
1. the needle thread is not threaded properly
2. The needle thread tension is to tight
3. The needle is bent or blunt
4. The needle is incorrectly inserted
5. The needle thread & the bobbin thread are not set under the presser foot when starting to sew
6. the threads were not drawn to the rear after sewing
7. The thread is either to heavy or to fine for the needle

Have you cleaned your discs lately? Thread has wax applied to it believe it or not. Take a sturdy piece of cloth, fold it over and "floss" the tension discs. Test the stitch again. If that does not solve your problem, then the discs themselves may need replaced.

type in your browser chain stitch machine & it will bring up website
that have them

Put the tension back to the normal setting - around 4.

Lengthen the stitch to accommodate the multi layers.

When you are sewing and come to a thicker section, stop with the needle down, lift the presser foot and place a folded scrap of fabric under the back of the foot to keep it even. Lower the presser foot and continue sewing.

Hello,
Here's some solutions to try.

* Re-thread your machine
It may be threaded incorrectly.

* Raise your feed dogs
If your machine has this feature.
* When you start to sew a seam, hold the upper and bobbin thread tails. Hold them back and out of the way as you sew your first couple of stitches. This will keep them from getting
caught in your machine.

I hope this helps you.

Make sure that you have a new needle and not a used one.

If you are sewing lightweight curtains, use a size 80/12 needle. If heavier fabric, a size 90/14.

Make sure that the needle is inserted with the flat side to the back.

Inspect the needle plate where the needle goes through and check for burrs. If there are burrs, use a very fine sandpaper folded flat to fit through the hole to remove them.

Take out the hook and inspect it for burrs as well. Take care not to dull the tip of the hook.

Set the upper tension knob/dial to 5.

Use Mettler or Gutermann thread and Schmetz needles. This can make a huge difference.

can u showe me a visial on how to thread