How Much Bobbin Thread Should Be Showing on the Back of the Fabric?

A properly balanced embroidery stitch will typically show approximately two-thirds upper thread and one-third bobbin thread on the back of the fabric. This serves as a general guideline for evaluating stitch quality and thread tension.

However, this ratio should not be treated as an absolute rule. Different fabrics, stabilizers, thread types, and designs can affect the appearance of the stitch on the back of the material.

What Matters Most?

The most important indicator of proper tension is the appearance of the embroidery on the front side of the fabric. If the design looks clean, the stitches are well-formed, and there is no excessive bobbin thread showing on top, the tension is likely adjusted correctly.

Signs of Improper Tension

You may need to adjust your tension if you notice:

• Excessive bobbin thread visible on the top side of the design
• Loose or looping stitches
• Thread breaks
• Poor stitch coverage

Checking Stitch Balance

When evaluating stitch quality, inspect both the front and back of the embroidery. A balanced stitch should produce a clean appearance on the front while showing a consistent amount of bobbin thread on the back.

Remember, the goal is not to achieve a perfect ratio on every design, but to produce clean, professional-looking embroidery with balanced stitch formation.