Symptoms
- Gaps appear in an otherwise straight stitch line
- Skipping is worse on certain fabrics
- Thread may fray or break intermittently
- Stitches look normal, then suddenly skip a few
Likely causes
- CommonDull, bent, or wrong-type needleA needle that isn't sharp or matched to the fabric can miss the loop timing needed to catch the bobbin thread.
- CommonNeedle inserted backwards or not fully upIncorrect needle orientation changes the timing between the needle and the hook.
- PossibleLow-quality or old threadThread that frays or has inconsistent thickness can cause intermittent skips.
- PossibleStretchy or slippery fabricKnits and slippery synthetics are more prone to skipped stitches without a specialty needle or stabilizer.
What to do
- Replace the needle with a fresh one appropriate for your fabric (a ballpoint or stretch needle for knits, for example).
- Double check the needle is fully inserted with the flat side oriented correctly per the manual.
- Switch to a good quality all-purpose or specialty thread if the current spool is old or low quality.
- Add a stabilizer under stretchy or slippery fabric to reduce movement while sewing.
- Clean lint from the bobbin area and feed dogs, since buildup can also affect timing slightly.
- Test stitch quality on a scrap of the actual fabric after each change.
Tools and parts
- Replacement needles
- Fabric stabilizer (for knits)
Ballpoint/stretch sewing needlesSearch: “sewing machine ballpoint stretch needles”
When to call a pro
Take it to a sewing machine technician if skipped stitches continue with a correct needle and clean machine, since hook timing may need professional adjustment.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.