Manufacturing Cost Comparison Calculator
Compare two different manufacturing processes (e.g. CNC Machining vs Injection Molding or 3D Printing vs Stamping) and calculate their crossover point.
Process A (e.g. 3D Print / CNC) vs Process B (e.g. Molding / Stamping)
Process Crossover Volume Formula
Crossover Volume = (Fixed Setup B - Fixed Setup A) ÷ (Variable Unit Cost A - Variable Unit Cost B)- Process A: Low setup / tooling investment, higher variable unit cost (e.g., CNC milling, additive 3D printing).
- Process B: High initial tooling investment, low variable unit cost (e.g., injection molding, die casting, stamping).
- Crossover Point: Exact production quantity where both manufacturing methods cost the same.
Step-by-Step Worked Example
Calculation Steps:
- Crossover Quantity = ($25,000 - $1,500) / ($45.00 - $5.00) = $23,500 / $40 = 588 units
- Total Cost A at 1,000 Units = $1,500 + ($45 × 1,000) = $46,500 ($46.50/unit)
- Total Cost B at 1,000 Units = $25,000 + ($5 × 1,000) = $30,000 ($30.00/unit)
How to Use This Calculator
- 1Enter names, fixed tooling/setup costs, and variable unit costs for Process A.
- 2Enter fixed tooling and variable unit costs for Process B.
- 3Specify your planned production volume to see which method is more economical.
Assumptions & Limitations
- Both processes produce parts meeting design engineering tolerances and mechanical specs.
- Tooling life for Process B covers the planned volume.
Frequently Asked Questions
What is a manufacturing crossover chart?
A crossover chart graphs total cost versus production volume for two alternative manufacturing technologies. The intersection where the lines cross is the exact volume threshold to switch processes.
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