A good die cuts the last sheet of the run as cleanly as the first. What makes that possible is the checking routine at the press as much as the die itself: burr, cut drift, hard peel, crease cracking and waste that will not separate are four distinct symptoms, and each has a different place to look first. The list below ties each symptom to its source.

Burred or rough edge

A burred edge can come from rule wear, the wrong rule choice, material hardness or insufficient pressure. On thick, fibrous material the form of the rule edge and the pressure balance are decisive; a dull edge separates the material by crushing rather than cutting and leaves fluff on the edge.

To understand the fault, different points of the same line are examined. If the burr is in one area, the seating of the die or local pressure distribution is examined; if it is over the whole sheet, the rule or the material match. When the material batch changes the old setting may not give the same result; the batch is noted.

  • The rule edge and pressure are checked; a dull edge crushes instead of cutting.
  • Whether the fault is in one area or across the sheet is separated.
  • If the material batch has changed the setting is confirmed again.

Cut drift and print-to-cut register

On printed work, when the cut drifts relative to the print, the fault is not always in the die. If the drift is the same direction and amount on every sheet, die placement or the artwork-to-dieline reference is examined; if it changes from sheet to sheet, print position, sheet size, moisture or feed behaviour is the stronger candidate.

The approved print PDF, the cutting drawing, a printed sheet and a cut product are laid on the table in the same orientation and the four references are checked over one another. When print margins and critical visual areas are discussed before die production starts, that check does not have to happen during the run.

  • Print and cut must use the same reference corner.
  • Constant drift points to the die side, variable drift to the machine and sheet side.
  • Critical visual areas are marked before die production.

Hard peel or liner cutting on labels

If a label peels hard the cut depth is insufficient; if the liner is cut the pressure or rule height is too high. The two symptoms point in opposite directions and are not merged into a single “does not cut” note. In both cases a peel test is made from different points: corner, centre and fine detail are assessed separately.

If a cut line shows when the liner is held to the light the setting is deep; if there is no mark and the label still resists, it is shallow. When the material batch, liner or adhesive changes, the old setting loses its validity and a short trial cut is repeated on the real stock.

  • Corner, centre and fine detail are peel-tested separately.
  • The liner is held to the light; a cut line means a deep setting.
  • A change of material, liner or adhesive batch is noted.

Cracking on the fold or waste that will not separate

Crease cracking can come from board thickness, grain direction, heavy ink coverage or the wrong channel choice; a narrow channel cracks the board, a wide one lets the fold line wander. Waste that will not separate is a stripping, rubbering or detail-geometry issue: missing rubber holds the piece on the rule, a narrow bridge breaks during stripping.

At die approval, several products from different points of the sheet are assessed together instead of a single sample; the crease line is examined on the folded product, and waste gaps are considered at machine speed. That round takes a few minutes and reduces waste in the production run from the start.

  • The crease line is examined on the folded product, not the flat sheet.
  • Waste gaps are considered at machine speed and on the real material.
  • More than one sample, from different positions on the sheet, is checked.

Quote details we clarify together

When the file, material, quantity and deadline are clear, the quote conversation moves faster and with less back-and-forth.

  • Current revision file
  • Material and quantity details
  • Critical dimensions or production notes
  • Deadline expectation and delivery preference