Appliqué Tack-Down: Zigzag vs Running Stitch
Updated October 15, 2026 · 5 min read
Between the placement line and the satin cover, an appliqué design holds the fabric down with a tack-down. Digitizers do this two ways: a narrow zigzag, or a plain running stitch around the same outline. Both are common, both end in the same satin finish, and the best choice depends on your fabric and what you stitch.
How each one sews
Zigzag tack-down
- The machine sews the placement line and stops.
- You lay the fabric.
- The machine sews a narrow zigzag that straddles the outline, which holds the fabric edge and the stitches overlap the edge slightly.
- It stops again so you can trim.
- The satin cover goes over the top.
Running-stitch tack-down
- The machine sews the placement line as a running stitch and stops.
- You lay the fabric.
- The machine sews the same outline again as a running stitch, which fastens the fabric down.
- It stops so you can trim.
- The satin cover goes over the top.
Some embroidery software describes the running method for large letters in exactly this way: outline in running stitch, a stop to place the fabric, a second running stitch to sew it down, then the satin along the edge.
How they compare
| Zigzag tack-down | Running-stitch tack-down | |
|---|---|---|
| Holding the fabric | Wider anchor along the edge, so the fabric is held more firmly | A single line of stitching; enough for most stable fabrics |
| Stitch count | Higher | Lower, so it sews faster |
| Bulk under the satin | A little more | Very little |
| Trimming | Edge is held down wider, which keeps it from lifting while you trim | Trim close to the line; very small shapes can be fiddly |
| Common choice for | Stretchy or loosely woven fabrics, larger shapes | Small letters, light fabrics, quick jobs |
Choosing a tack-down in the appliqué tool
In the ThreadType appliqué generator, pick the Satin finish and you will see a Tack-down type control with two choices.
- Zigzag is the default. A tack-down thickness slider sets how wide the zigzag is. It cannot be wider than the satin cover, or the guide stitches would show past the finished edge.
- Running stitch replaces the zigzag with a plain running line along the placement outline. The thickness slider is hidden because a running line has no width.
Either way the file has three color blocks: placement, tack-down and satin. The machine stops after each one, so you can lay the fabric and trim exactly as in the step-by-step guide.
A few rules that apply to both
- The satin cover has to be wide enough to hide the tack-down and the raw edge, so very narrow satin on a thick fabric will not cover well.
- Trim as close to the tack-down line as you safely can. The closer the trim, the neater the satin edge.
- Stretch fabrics benefit from the Stretch fabric setting whichever tack-down you pick, because it builds the stitches with more allowance.
Keep reading
Appliqué
How to Appliqué with an Embroidery Machine, Step by Step
A step-by-step guide to machine appliqué: placement line, laying the fabric, tack-down, trimming and the satin cover, with fabric and stabilizer tips.
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Appliqué Satin Width and Density Guide
How wide to make the satin cover, how dense to stitch it and how the tack-down width fits in, with starting values for common letter sizes and fabrics.
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Appliqué Fabric and Stabilizer Guide
How to choose appliqué fabric, fusible web and stabilizer for woven and stretch garments, and how to hoop so the satin covers the edge.
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See all embroidery and appliqué guides.