Each facing follows its own neckline
Front and back lengths remain separate so the pieces can follow different curve depth and shape.
Generate front and back neckline facings with seam allowance, center-fold guides, shoulder notches, and print-ready exports. Use the finished neckline from a bodice or dress, or enter front and back neckline lengths manually.
Generated example
The example uses 12.2 cm for the front half-neckline, 8.8 cm for the back, and a 5 cm facing depth to build two coordinated facing pieces.
Front and back lengths remain separate so the pieces can follow different curve depth and shape.
The two half-neckline values are doubled across the folds to represent the full finished neckline.
Source links from bodice and dress generators can transfer both the measured lengths and available curve-shape data into the facing tool.
Both facings use the same geometry in tiled A4 PDF, full-size PDF, and SVG.
Related guides
Draft a bodice block with neckline, armhole, shoulder, length, and waist shaping.
GeneratorBuild a connected bodice and skirt draft with waist, darts, length, and hem checks.
DetailGenerate a shirt collar, stand collar, or flat collar matched to the neckline.
Neck facing guide
The generator drafts separate front and back facing half-patterns on fold. The inner facing curves are fitted to the front and back neckline seam lengths, while the outer curves create a stable finishing width for clean sewing.
The export includes front and back facing pieces, inner neckline seam curves, outer facing curves, dashed seam allowance, center-fold lines, shoulder notches, labels, and a 5 × 5 cm test square.
Use the finished neckline seam lengths from the garment, not body neck circumference. When started from a basic bodice or dress, these values are filled from the generated geometry.
Facing width controls how deep the internal finish sits inside the garment. Seam allowance is added as a cutting guide around the facing pieces.
Compare the facing inner curves with the prepared neckline and test the shoulder join before cutting final fabric or interfacing.
Print at actual size or 100%, disable page scaling, and verify the 5 × 5 cm square before cutting.
Neckline finishing
A facing reproduces the garment neckline seam and extends inward by a controlled depth. It must preserve the neckline shape without rolling outward, stretching or colliding with shoulders, closures and other seams. Use finished front and back neckline lengths, then transfer match points from the actual garment pattern.
Curved necklines can grow while handled. Staystitch or otherwise stabilize a toile or paper seam line before measuring. Exclude seam allowance and measure each front and back section to its real endpoints, including center-front openings where the facing will finish.
A deeper facing spreads support and lies more calmly, but it can overlap darts, shoulder shaping, zipper tape or armholes. A very narrow facing is lighter yet more likely to roll. Map the inner edge on the bodice pattern and keep a smooth width through tight curves.
The facing’s inner curve remains free inside the garment. Choose overlocking, binding, turning or a clean lining connection before cutting, because each method changes bulk and may need extra width. Do not stretch the inner edge while finishing it.
Clip concave curves, grade bulky layers and understitch where access allows. Understitching holds the seam line just inside the garment and reduces roll-out. At corners or closure ends, trim and turn carefully before pressing the full curve.
The generated pair is a starting geometry; transfer garment-specific construction marks before sewing.
From pattern to look
Before you cut fabric, browse shirt ideas in Nastix Design and decide which silhouette and details you want to make.
How and when
This generator converts the entered measurements into vector geometry. Where a construction has related seams, the software can calculate their lengths; preview, SVG, copyshop PDF, and tiled A4 PDF are produced from the same geometry. These software checks do not replace printing, sewing, or fitting a test sample.
Last recorded review of the generator implementation and documentation: 2026-07-13. The output has not been certified through physical production testing; verify measurements, print scale, seam relationships, fabric behaviour, and fit for your project.
Common questions
Yes. A neck facing finishes the neckline on the inside of the garment, while a collar is a visible external piece attached to the neckline.
The generator can show the total length, but the draft uses separate front and back neckline lengths so each facing piece matches its garment section.
Yes. Basic bodice and dress previews pass the calculated front and back neckline lengths directly into this generator.
A standard 4–6 cm facing is suitable for many woven garments. Use a narrower facing for lightweight styles and a deeper facing when the neckline needs more stability.
Print at actual size or 100%, disable fit-to-page scaling, and check the 5 × 5 cm test square before cutting fabric.
Workflow
Start from the finished front and back neckline lengths, either manually or from a generated bodice or dress.
Select standard, narrow, or deeper facing width and seam allowance.
Download SVG, copyshop PDF, or tiled A4 PDF with test square and construction marks.