This tool helps you choose the correct creasing/scoring channel width (mm) for die-cut and folding work. Select your material type and GSM, then get a recommended channel width plus a safe range to handle real-world thickness variation. Add coating/lamination and grain vs. score options to see cracking risk and setup notes. Use the output as a clear production spec for your die maker—reducing trial-and-error, minimizing fold cracking, and improving crease quality on cartons and packaging jobs.