The short answer
Machining price usually drops fast from 1 piece to small batches, then flattens. It does not behave like stamping or molding unless you redesign the process around volume.
Why the curve drops early
Setup, programming, fixture prep, and process proving dominate at low quantity. Once those are spread over more pieces, unit price falls quickly. That is why one part and ten parts often do not price ten times apart.
The first few parts are carrying the launch burden.
Why the curve flattens later
After setup is absorbed, material yield, cycle time, tool wear, inspection, and outside processing dominate. Unless the supplier changes the route with dedicated fixtures, bar-fed automation, palletization, or special tooling, the unit price stops falling dramatically.
Machining has volume leverage, just not infinite volume leverage.
What creates the next drop
True process change. That may mean tombstone fixtures, custom soft jaws, family tooling, lights-out strategy, or moving a feature into a special process. Those changes can lower unit price, but only if demand justifies the investment.
Buyers who ask for production pricing on prototype process routes are asking for fiction.
How to source by volume honestly
Quote with the real demand bands: 1, 10, 100, 1000, and annual usage if relevant. Ask which bands trigger route changes. The supplier may have a better answer at 500 per year than at 50 per lot.
Volume pricing is a process question disguised as a commercial one.
What an experienced buyer does next
Related reading: Prototype vs production machining: sourcing strategies for each phase and Single-source vs multi-source for machined parts: pros, cons, and risk.
The right move is usually to define the real functional requirement, remove the decorative requirements, and let the supplier build a route around what actually matters.
Comparison table where relevant
| Quantity band | What dominates | Typical price effect |
|---|---|---|
| 1 to 5 | Setup and proving | Highest unit cost |
| 10 to 100 | Setup spread over batch | Sharp drop |
| 100 to 1000 | Cycle time and tool wear | Moderate drop |
| 1000+ | Route redesign opportunity | Depends on investment |
How to specify this in your RFQ
Request pricing by volume tier and ask what assumptions change at each tier. If you expect annual releases, say whether the demand is blanket order, forecasted release, or one-time. That difference affects how aggressive a supplier can get.
A clean RFQ does not just list requirements. It separates must-haves from preferences so the supplier can optimize where it is safe.
Have a part that needs quoting? Email your drawings to rfq@precisionmachining.co -
we return a competitive quote within 24 hours. Phone: +1 312-579-0808.