Manufacturing cost per part decreases with larger batch sizes because setup cost is amortised over more parts. This calculator helps you find the break-even batch size for quoting...
Let our engineers find the right factory for your specs. 100% Quality Guaranteed.
Request a Proposal โBefore CNC controllers calculated Batch Cost automatically, machinists used cardboard slide calculators โ Mitsubishi Materials famously distributed tens of thousands of these in the 1970s. Every tooling rep had a pocket full of them. The math was the same, but the constraints were wildly different: HSS tooling maxed out at 30-40 SFM in steel, and feed rates were limited by machine rigidity, not coating technology.
The Dormer Pramet coating revolution in the 1980s โ TiN first, then TiCN, TiAlN, and eventually AlCrN โ changed everything. Suddenly, Batch Cost could be pushed 200-300% higher without sacrificing tool life. Widia's introduction of submicron carbide substrates in the 1990s further expanded the window: finer grain structures meant harder tools that could still absorb the shock of intermittent cuts.
In 2026, Dormer Pramet and Widia both offer cloud-based Batch Cost optimization via their NOVO and ToolGuide platforms. Mitsubishi Materials's CoroPlus system integrates directly with Okuma and Grob CNCs for real-time adaptive control. The slide calculator has been replaced by AI-assisted CAM, but the core principle remains: the right number = the right cut.
Manufacturing cost per part decreases with larger batch sizes because setup cost is amortised over more parts. This calculator helps you find the break-even batch size for quoting or production planning.
Setup cost (fixturing, programming, tooling setup, first-article inspection) is fixed regardless of batch size. Spreading $200 setup over 10 parts adds $20/part; over 1,000 parts it adds only $0.20/part.
EBQ balances setup cost amortisation against inventory holding cost. For most CNC job shops, the practical EBQ is driven by customer order quantity and machine schedule, not theoretical optimisation formulas.
Yes. The processing cost should include the fully burdened machine rate (operator + machine depreciation + electricity + coolant + floor space). Typical CNC machine rates range from $60-150/hour depending on the machine type and region.
Enter the batch quantity, material cost per part, setup cost, and processing cost per part. The calculator shows total batch cost and cost per unit. Use it to compare quotes or optimise batch sizes.
Continue with closely related tools from the machining calculator library.
Use the calculator freely. If the result points to a tooling or process problem, we can source the exact carbide tooling you need from vetted factories in China. Compare factory-direct pricing.
Explore more precision machining tools and calculators