Laser cutting has low fixed investment and fast revision, suiting prototypes, high mix and low-to-medium volumes. Stamping requires tooling but can reach seconds per part and combine piercing, blanking and forming. Decide by total cost and revision risk; no universal volume automatically justifies a die.
Values in this article support engineering screening during design review, RFQ and prototyping. They do not replace formal calculations, material data sheets, qualified procedures or contractual standards.
BREAK-EVEN
If laser variable cost C_L=CNY 18/part, stamping tool T=CNY 120,000 and stamping variable cost C_S=CNY 4/part, theoretical break-even N=T/(C_L−C_S)=8,572 parts. Add tool maintenance, trials, material yield, quality cost, financing and revision scrap. If design may change in six months, even a theoretical break-even may not justify tooling.
PHASED STRATEGY
1. EVT/DVT: laser+bending to validate holes, assembly, tolerance and demand quickly. 2. PVT: freeze CTQs/material, collect rate/yield data, compare simple, progressive or transfer tooling. 3. Production: tool approval should cover last-off sample, CTQ capability, spares and maintenance; define ownership and “tool life.” 4. Hybrid: laser perimeter with punched standard features, or stamped blank plus secondary laser, may be best at medium volume.
PROJECT CHECKLIST
Annual demand and lot size; revision stability; takt; material yield; tool cost/life; change cost; capability requirement; backup capacity.