A small batch still needs a setup
Even for ten parts, someone must review the drawing, prepare the program, set the tools and workholding, and inspect the first piece. Much of that work is needed for the batch regardless of its size. It is one reason a small order carries a higher unit price.
That does not make small-batch production a poor choice. When a design is unproven, a modest initial quantity can prevent a large stock of unusable parts. At that stage, validating the design and process matters more than chasing the lowest unit cost.
Ten parts: learn before committing
These quantities are examples, not universal economic thresholds. An initial batch can reveal assembly issues, inaccessible features and missing drawing details. Check how well those samples represent the actual application.
Tell the manufacturer if the parts are prototypes. If the production run will use another machine or fixture, the transfer from prototype to production needs its own validation.
A hundred parts: repeatability becomes visible
Tool wear, dimensional drift and handling begin to matter more as the run grows. The hundredth piece must meet the requirements just as the first does. Inspection frequency should follow the technical risks and agreed plan, not quantity alone.
A repeat order to the same revision may reduce preparation work. Changes in material, tooling or equipment still need review; yesterday's results are not proof that a changed process will behave identically.
A thousand parts: look at the whole flow
Bar feeding, combined operations, deburring and inspection flow can have a significant effect on cost. Balance those gains against inventory financing and the risk of a design change. Buying far more than you need can lower the unit price while increasing total expenditure.
Ask for several batch-size options, with sample and production prices separated. Distinguish annual forecasts from firm orders. For split deliveries, agree who holds the stock and when payment is due.
Choose the quantity around the product
Consider design maturity, consumption and replenishment time together. Small batches suit frequent revisions; larger runs can suit stable demand. The unit-price column is only one part of that decision.
Related guides
- From prototype to production
- Designing CNC parts for lower cost
- Which Parts Suit Swiss-Type CNC Turning?
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