Dielines: how to prepare a cut path that works

A dieline is the shape a label or sticker is cut to. It is not decoration — it is machine instruction, and a dieline that is visually right can still be technically unusable.

The three layers of a print-ready file

1. Artwork — what prints.
2. Cut path (dieline) — where the blade goes.
3. Special layers — white ink, foil, spot UV, if used.

Each must be separate and clearly named. A single flattened layer cannot be cut.

Rules for the cut path

• Closed: the path must return to its start point. An open path cuts a line across the design.
• Vector: shapes, not pixels. A traced bitmap produces hundreds of nodes and an uneven edge.
• Single stroke: one path, not a doubled outline.
• No stray points: a point left off-canvas becomes a cut line.
• Inside the bleed: the artwork extends 3 mm beyond the cut, so the blade lands on printed area.

The four common mistakes

1. The dieline is a picture. A PNG of a shape cannot drive a plotter. It must be a path.

2. The path is open. Usually from drawing with a pen tool and not closing it. The cutter follows literally.

3. Nodes are excessive. An auto-traced logo can carry 2,000 nodes, which slows the cut and produces a rough edge. Simplify to the shape, not the pixels.

4. The shape has features smaller than the material can hold. Spikes under ~1.5 mm, or letter-shaped cut-outs, tear when peeled — particularly on paper.

Simple shapes cost less

A circle, rounded rectangle or standard oval uses an existing die or a plotter path with no die cost. A custom contour needs a die above a few hundred units.

If the design works with a rounded rectangle, that choice can halve a small order’s price without changing the visual much.

Multi-piece sheets

For a kiss-cut sheet, each sticker needs its own closed path, with at least 3 mm between paths so the blade does not tear the liner. Sheets also need a registration mark if the cut must align with print.

What this means for buyers

Supply the cut path as a separate vector layer. It is the single most common missing element in customer files.

Simplify before you beautify. Fewer nodes cut cleaner and cost less.

Consider a standard shape at low volume. A die is a one-off cost that never goes away.

Ask for a cut proof on the real material. Paper and vinyl behave differently at the same path.