Appliqué Satin Width and Density Guide
Updated October 15, 2026 · 5 min read
Two settings change how an appliqué edge looks more than any other: how wide the satin cover is, and how closely its stitches are packed. Here is what each one does and how to pick values you can trust.
Satin cover width
The satin cover is the visible border around the fabric. Wider covers look bolder and hide the raw edge more safely; narrower ones look finer. In the appliqué tool the satin cover thickness runs from 1 mm to 8 mm, and the default is 2.5 mm.
- Around 2.5 to 3 mm is a common, neat edge for letters about 2 to 3 inches tall.
- 3.5 to 4 mm gives a bolder look and more forgiveness if the fabric shifts slightly, but needs thicker letter strokes (see fonts for appliqué).
- Wider than 5 mm suits large letters and puff styles. At this width, satin stitches get long; see the split satin note below.
Satin density
Density is the distance between satin stitches. The tool’s range is 0.2 to 3 mm, with 0.4 mm as the recommended default. Smaller numbers pack the thread tighter and look fuller; very small numbers risk puckering and thread build-up. Larger numbers sew faster but leave visible gaps between stitches.
Tack-down width
When the tack-down is a zigzag, its thickness sets how wide the zigzag is. It must stay at or below the satin cover width, otherwise the hidden guide layer would show past the finished edge. A narrower tack-down holds tight corners and small counters more cleanly; a wider one gives the satin more foundation on soft or stretchy fabric. If you choose a running-stitch tack-down instead, there is no width to set. See zigzag vs running tack-down.
Fabric type and pull compensation
Dense stitching pulls fabric in, so the finished satin can come out narrower than designed. The Fabric type setting adds allowance to the placement, tack-down and satin to compensate.
| Fabric type | Examples | Allowance |
|---|---|---|
| Stable | Felt, backed fabric | Least |
| Woven | Cotton, twill | Medium (the default) |
| Stretch | Knit, jersey | Most |
Split satin stitches on wide columns
By default, satin stitches longer than 6 mm are split in two, which can leave a faint line of small dips down the middle of a wide satin column. The Split satin stitches checkbox turns that off, so every stitch runs straight across. That gives a cleaner column on wide covers, with the trade-off of longer stitches. A stitch file also cannot hold a single stitch longer than about 12 mm, so very wide columns are still split where needed.
Starting values
| Project | Letter height | Satin cover | Density | Fabric type |
|---|---|---|---|---|
| Small patch or pocket | 1 to 1.5 in | 1.5 mm | 0.4 mm | Woven |
| Kids’ tee | 2 in | 2.5 mm | 0.4 mm | Woven or stretch |
| Adult tee chest | 3 in | 3 to 3.5 mm | 0.4 mm | Woven or stretch |
| Sweatshirt | 3 to 4 in | 3.5 mm | 0.4 mm | Stretch |
| Jacket back | 5 in or more | 4 mm | 0.4 mm | Woven |
Keep reading
Appliqué
Best Fonts for Appliqué Letters
Which fonts make clean appliqué letters and which cause trouble: stroke thickness, counters, scripts and size, with examples you can try in a stitch preview.
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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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How to Use the Appliqué Generator
A walkthrough of the ThreadType appliqué generator: text, font, size, satin, tack-down, fabric, layout and corner settings, then preview and download.
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See all embroidery and appliqué guides.