Technical Adjustment of a Blind Hem Machine
A blind hem is designed to secure a folded garment edge while keeping the stitching nearly invisible from the outside. It is commonly used on trousers, skirts and selected woven or knitted garments. The machine must be adjusted carefully because the needle should catch only a small amount of the outer fabric while securing the folded hem.
Important adjustment points
- Folder position: Guides the folded fabric into the correct shape.
- Stitch bite: Controls how much of the outer fabric is caught by the needle.
- Thread tension: Affects stitch appearance and security.
- Presser-foot pressure: Helps maintain consistent feeding.
- Needle condition: A damaged or unsuitable needle can create visible marks or skipped stitches.
How to troubleshoot
If stitches are too visible, check the stitch bite and fabric folding. If the hem is loose, review stitch formation, tension and the amount of fabric caught. Uneven feeding may require checking the folder, presser foot and fabric handling.
Always test on the actual production fabric before bulk sewing. The correct adjustment can vary with fabric thickness, stretch and hem depth.
FAQs
Why are blind hem stitches visible? The needle may be catching too much of the outer layer.
Can one setting work for all fabrics? No. Test and adjust for the approved material.
What should be checked after adjustment? Appearance, stitch security, hem width and feeding consistency.
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