Fabric
Spec
Spec
Natural
Cotton Poplin
Needle
PrimarySchmetz Microtex Sharp 70/10 or 80/12
AlternativeSchmetz Universal 80/12
Thread
- Gütermann Mara 120 for fine poplin
- Gütermann Mara 100 for standard weight
Machine Settings
Singer Heavy Duty 4452| Stitch length | 2.0–2.5 mm |
| Stitch width | 0 (straight stitch); 4.0 mm zigzag for edge finishing |
| Tension | 3.5–4 |
| Presser foot | Standard foot |
Quick Tips
- Pre-wash. Quality poplin shrinks, and you want the shrinkage to happen before the fabric is cut
- Press seams as you go; cotton poplin holds a crease beautifully and shows unpressed seams clearly
- Use Microtex needles to avoid visible holes in the tight plain weave
- Edge-finish promptly. Poplin frays steadily once cut
Detail
Cotton poplin is a tight plain-weave cotton with a slight ribbed texture (weft heavier than warp). It's the workhorse shirting fabric for button-ups, light pants, and pocket bags. Compared to polyester broadcloth, it presses crisper and frays harder. A Microtex needle pushes through cleanly without leaving visible holes, which matters on shirts. Use 2.0 mm stitches for collar and cuff topstitching, 2.5 mm for side seams. Press seams open on dressier shirts, to one side and topstitch on workshirts.