Prepare an SVG or DXF sewing pattern for fabric calculation

Prepare the outlines at their real size

Use closed outer contours for the pieces you want to arrange. PatternNest supports SVG, DXF and suitable vector PDFs. Select the PDF page and contours for your size. Scanned images are not vector outlines, and tiled pages are not stitched together automatically.

Check a known measurement after import. The outline needs to include the seam allowance you intend to cut; PatternNest doesn't add it. Internal notches, labels and grainline arrows aren't carried into the layplan, so keep your original pattern for cutting and assembly.

Count what will actually be cut

1. Set the quantity for each piece and check whether you need identical copies or a mirrored pair.
2. Review the total piece count after adding copies and mirrored pieces. Five different shapes can still produce more than ten fabric pieces.
3. Set the usable fabric width and the direction rule for each piece. Use the one-way constraint when all pieces must keep the same orientation.
4. Run the calculation and inspect the arrangement. Check that the required pieces are present and their direction matches your pattern instructions.

Choose a folded or single-layer layout

For fabric folded lengthwise, keep the half-pattern and mark its cut-on-fold edge. PatternNest accounts for both layers. Use the full unfolded outline for a single-layer plan. A mirrored pair produces two separate pieces, while a cut-on-fold piece produces one unfolded piece.

The reported length belongs to the outlines and settings in this job. For stripes, checks or image repeats, set the repeat and matching references yourself and review the result. Add any allowance for shrinkage separately.