This technical decision belongs to cutting die repair and refurbishment service scope. A repair decision should not be based on the visible break alone. Local rule or rubber replacement can be economical when geometry is still correct; if the board-to-product relationship has changed, repair may only postpone production risk.

Confirm whether the product has changed

Even a repeat job under the same SKU can carry a revised closure, glue flap or material thickness. Repairing before comparing the current drawing with the old die preserves geometry that may no longer be valid. Verify critical dimensions, crease positions and machine layout first.

Separate local wear from systemic damage

A blunt joint or missing rubber segment is local. A warped board, widespread loss of rule height or generally crushed creases affect the complete tool. Check the die on a flat reference and inspect every important rule joint.

Include press downtime in the cost decision

A cheap repair becomes expensive if it causes repeated make-ready, waste and a second stop. Repair often suits a short run with localized wear; a new die can be safer for high volume, narrow tolerances or a critical delivery window.

Record the decision with four pieces of evidence

Keep the current drawing, full die photograph, close view of the problem and latest cut part in the same job record. The decision then rests on comparable production evidence rather than memory alone.