The front curve stays distinct
Its length and shape are preserved instead of splitting the total opening into two equal generic halves.
Armhole facing pattern
Create an armhole facing pattern from your armhole
Generate front and back armhole facings with seam allowance, notches, and print-ready exports. Use the finished armhole from a bodice or dress, or enter front and back armhole lengths manually.
Armhole facing preview
Generated example
Armhole facings built from front and back seam lengths
Armhole-matchedThis example combines a 22.5 cm front armhole and 23.5 cm back armhole into a 46 cm opening with separate 5 cm deep facing pieces.
The back completes the opening
Together the two pieces reproduce the measured armhole while keeping shoulder and underarm joins identifiable.
Use transferred values from a sleeveless bodice or dress when possible, then compare the facing sewing edge with the garment armhole before cutting.
Export both pieces as A4 PDF, full-size PDF, or editable SVG.
Related guides
Generator
Basic bodice pattern
Draft a bodice block with neckline, armhole, shoulder, length, and waist shaping.
GeneratorBasic dress pattern
Build a connected bodice and skirt draft with waist, darts, length, and hem checks.
FinishNeck facing pattern
Create front and back neckline facings matched to bodice or dress neckline curves.
Armhole facing guide
Printable facings matched to the armhole seam
The generator drafts separate front and back armhole facing pieces. The inner facing curves are fitted to the front and back armhole seam lengths, while the outer curves create a stable internal finish.
Front and back facings
The export includes front and back facing pieces, inner armhole seam curves, outer facing curves, dashed seam allowance, notches, labels, and a 5 × 5 cm test square.
Front and back armhole lengths
Use the finished armhole seam lengths from the garment, not body arm circumference. When started from a basic bodice or dress, these values are filled from the generated geometry.
Facing width and seam allowance
Facing width controls how deep the internal finish sits inside the garment. Seam allowance is added as a cutting guide around the facing pieces.
Match before cutting
Compare each facing inner curve with the prepared armhole and sew a test sample before cutting final fabric or interfacing.
A4 tiled PDF, copyshop PDF or SVG
Print at actual size or 100%, disable page scaling, and verify the 5 × 5 cm square before cutting.
Who, how, and when
Drafting logic by Nastix Design
This generator is maintained as application code: measurements are converted into vector geometry, related seams are measured numerically where the construction requires it, and the same geometry is used for preview, SVG, copyshop PDF, and tiled A4 PDF.
Generator content and output workflow reviewed 13 July 2026. A generated block remains a fitting starting point; verify measurements, print scale, fabric behaviour, and a test garment.
Common questions
Armhole facing pattern FAQ
Is an armhole facing different from bias binding?
Yes. A facing is a shaped internal piece that follows the armhole curve, while bias binding is a narrow strip used to bind the edge.
Should I use body arm circumference?
No. Use the finished garment armhole seam length. The generator uses separate front and back lengths so each section matches the garment curve.
Can I start from a bodice or dress?
Yes. Basic bodice and dress geometry can pass the calculated front and back armhole lengths into this generator.
What facing width should I use?
A standard 4–6 cm facing is suitable for many woven sleeveless garments. Use narrower for lightweight styles and deeper when the armhole needs more stability.
How should I print the A4 armhole facing?
Print at actual size or 100%, disable fit-to-page scaling, and check the 5 × 5 cm test square before cutting fabric.
Workflow
01
Use the armhole
Start from the finished front and back armhole lengths, either manually or from a generated bodice or dress.
02
Choose facing width
Select standard, narrow, or deeper facing width and seam allowance.
03
Export for print
Download SVG, copyshop PDF, or tiled A4 PDF with test square and construction marks.