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Stitch ToolkitPractical tools for sewing and embroidery

Machine embroidery help

Embroidery Troubleshooter

Choose the problem you are seeing to find likely causes, fixes and prevention tips.

Search by problem, symptom or common alternative term.

Thread & Tension

6 choices

Bobbin thread showing on topTroubleshootTop thread showing underneathTroubleshootBird nesting / thread bunching underneathTroubleshootUpper thread breaksTroubleshootThread shredding or frayingTroubleshootLoose or looping stitchesTroubleshoot

Stitch Quality

4 choices

Skipped stitchesTroubleshootPoor stitch coverage or gapsTroubleshootUneven or inconsistent stitchesTroubleshootSatin stitches pulling apart or looking looseTroubleshoot

Fabric & Stabilisation

5 choices

Fabric puckeringTroubleshootStitches sinking into towels or pileTroubleshootFabric shifting during embroideryTroubleshootDesign distorting during embroideryTroubleshootHoles or damage around embroideryTroubleshoot

Needle Problems

1 choice

Needle breaking or bendingTroubleshoot

Hooping & Registration

2 choices

Outline not lining up / registration driftingTroubleshootHoop marks / hoop burnTroubleshoot

Machine / Bobbin Problems

2 choices

Bobbin thread breakingTroubleshootFrequent thread jamsTroubleshoot

20 practical troubleshooting guides. Start with simple setup checks and make one change at a time.

Machine / Bobbin Problems

Bobbin thread breaking

Check the symptom, then work through the fixes in order.

What you may see

  • The lower thread breaks repeatedly, leaving incomplete stitches or triggering a bobbin-thread warning.
  • Short or frayed bobbin-thread ends may be visible beneath the hoop.

Likely causes

  • The bobbin is poorly wound, damaged, incorrectly inserted or unsuitable for the machine.
  • Lint or a stray thread is interfering with the bobbin path.
  • The bobbin case has an accessible burr or is not seated correctly.
  • Upper-thread balance, a damaged needle or dense stitching is overloading the lower thread.

Try this

  1. 1Replace the bobbin with a correctly wound, known-good embroidery bobbin.
  2. 2Reinstall it in the correct direction and follow every bobbin guide.
  3. 3Remove obvious lint and stray thread according to the machine manual.
  4. 4Replace the needle and rethread the upper path.
  5. 5Reduce speed and test on scrap fabric.
  6. 6If multiple good bobbins keep breaking, stop adjusting the bobbin case and arrange professional service.

Prevention tips

  • Use bobbins that meet the machine maker’s size and winding requirements.
  • Discard cracked, warped or poorly wound bobbins.
  • Keep the accessible bobbin area clean without over-oiling.

Related issues

Bobbin thread showing on topFrequent thread jams