When a rectangle is not enough

Most print leaves the guillotine as a rectangle. Some jobs need a different shape: a rounded corner, a hanging tab, a window cut into a cover, a folder with slots for a card, a sticker sheet where individual labels peel away from a backing that stays intact. All of those come from cutting with a shaped tool rather than a straight blade, and the process has its own vocabulary, costs and design constraints.

Understanding those constraints early saves money, because the expensive part of shaped print is usually the tooling, and tooling is decided by the artwork. A shape that is adjusted before the tool is made costs nothing. The same adjustment afterwards means a new tool.

The vocabulary

The cutting forme

The tool itself is a board into which steel blades are set in the required shape, standing proud of the surface. Under pressure the blades cut through the sheet. The forme is made for your shape and is reused for repeat orders, which is why a second run of the same item is cheaper than the first.

Die cutting

The blade cuts all the way through the material. This is what produces shaped cards, tabs, windows, boxes and any piece whose outline is not a rectangle.

Kiss cutting

The blade cuts through the face material and the adhesive but stops at the backing paper. This is how sticker sheets work: individual labels lift off while the sheet stays in one piece. The setting is fine, which is why kiss cutting on very thin face materials needs care.

Creasing and perforating

The same forme can carry creasing rules, which compress rather than cut, and perforating rules, which cut intermittently. That means a folder can be cut, creased and perforated in a single pass. The behaviour of creases in thicker stock is covered in scoring, creasing and perforation.

Laser and digital cutting

Some shapes can be cut without a physical tool, using a laser or a blade driven from the file. There is no tooling cost, which suits short runs and prototypes, but the speed is lower and the economics reverse as quantity rises. Laser cutting also leaves a darkened edge on some materials, which can be a feature or a problem depending on the job.

Designing a shape that can actually be made

A few rules cover most of what goes wrong.

• Avoid sharp internal corners. Steel rule is bent, and it cannot bend to a point. Internal corners need a radius. Small radii are possible but drive up tooling cost.
• Keep detail proportionate to the material. Fine, intricate cuts in thick board tear rather than cut cleanly. The thicker the stock, the simpler the shape needs to be.
• Allow bleed around the whole cut line. Cutting has tolerance like trimming does. Artwork must extend beyond the cut everywhere, including inside window apertures.
• Keep important content away from the edge. The same safe margin logic as ordinary trimming, applied to a more complex outline.
• Mind the grain. A crease that runs across the grain cracks more readily. On shaped work with folds, grain direction should be planned rather than accepted, as explained in paper grain direction.
• Think about nesting. Shapes that tessellate use less material. An outline adjusted slightly to nest better can noticeably reduce cost on a long run.

Supplying the dieline

The cut shape is supplied as a dieline: a vector outline in the artwork file, on its own layer, in a clearly named spot colour, with no fill. Different line types should be distinguishable, so a cut line, a crease line and a perforation line are three separate colours with an explanatory key.

The dieline is a guide, not a printed element, so it must be set to overprint or otherwise excluded from output. A dieline that prints as a visible outline around every shape is a classic and avoidable error.

If you are working to an existing tool, ask for the dieline file rather than measuring from a sample. If the tool is new, agree the outline before it is made. Once steel has been bent, changes cost real money.

Choosing between tooled and digital cutting

The crossover point depends on the shape and the quantity. A sensible approach for a new product is to cut a short digital run first, confirm the shape works in the real world, and only then commission a tool for volume. That sequencing is part of the wider planning covered in planning a large print run.

Common applications and what each one demands

• Rounded-corner cards. The simplest shaped work and often available as a standard option rather than a bespoke tool.
• Presentation folders. Cut, creased and often slotted for a card. The slot position needs checking against the card it will hold.
• Window covers. An aperture cut in a cover revealing the page beneath. Registration between the aperture and the underlying page needs a tolerance built in.
• Sticker sheets. Kiss cut, with the backing intact. Consider whether labels need to be easy to lift, which affects spacing.
• Hang tags and shelf talkers. Cut with a hole or a hook shape. The material must be stiff enough to hold its form when hanging.
• Boxes and cartons. Cut, creased and glued. These need a proven dieline, since a small error compounds across every fold.

Waste, stripping and what comes off the sheet

Shaped cutting produces two outputs: the pieces you wanted and the material around them. Removing that surrounding waste is called stripping, and how easily it strips is a design consideration rather than an afterthought.

Small internal cut-outs are the usual difficulty. A narrow slot or a tiny window leaves a fragment that has to come free cleanly, and on some materials those fragments cling. Formes can carry ejection rubber to push them out, but very small or awkwardly shaped pieces still slow the process and raise the cost. If a design has several tiny apertures, it is worth asking whether the same visual effect can be achieved with fewer or slightly larger ones.

Nesting affects waste too. Two shapes that interlock use markedly less board than two that sit in separate rectangles, and on a long run that difference is a line on the quote. A designer who asks how the shape will lay out on the sheet before finalising it can often gain that saving with a change nobody notices in the finished piece.

Finally, think about what happens after cutting. Shaped pieces do not stack as neatly as rectangles, which affects packing, counting and delivery. For fragile outlines with narrow necks or protruding tabs, mention the intended handling so packing can be specified to match rather than assumed.

Where jobs go wrong

Three problems account for most shaped-print reprints. The first is artwork that does not bleed into the cut on every edge, leaving a white sliver where the tolerance falls the wrong way. The second is a dieline supplied at the wrong size or scaled by mistake, which is why the outline should always be checked against dimensions rather than eyeballed. The third is a shape that was never tested physically: a folder that does not close, a tab that tears, a box that will not fold square.

All three are caught by making one physical sample before committing. For tooled work that means a hand-cut mock-up or a short digital run in the real stock. It is a small cost against a full production run.

Finishing interacts with cutting

Lamination applied before cutting gives a sealed edge and protects the cut; applied after, it does not follow a complex outline. Order of operations matters, and it is a decision worth confirming rather than assuming. The options are compared in lamination compared. Raised or metallic finishes also need to sit within the cut area with a margin, since they cannot straddle a cut line cleanly, and those processes are described in spot UV, foil stamping and embossing.

How we handle shaped work

We check dielines before anything is made: corner radii against what steel can do, bleed around every cut edge, layer naming and whether the outline is set to print by mistake. Where a shape is new, we recommend a physical sample in the production stock, because a folder that does not close is only obvious in the hand. For repeat work we keep the tool, so the second order is quicker and cheaper than the first.

You can see the options under digital printing solutions and across printing services. What we inspect on delivery is described in quality control on a print run. Send a dieline through our contact page and we will review it, and there is more about us on the about page.

The short version

Die cutting goes through the material, kiss cutting stops at the backing, and the same forme can crease and perforate in one pass. Tooling is the main cost and it is fixed once steel is bent, so agree the shape first. Avoid sharp internal corners, keep detail proportionate to the stock, bleed into every cut edge and mind the grain where folds are involved. Supply the dieline as a named vector layer that will not print. Use digital cutting for short runs and prototypes, a forme for volume and repeats. And make one physical sample before the run, because shape problems only reveal themselves in the hand.