QuotedPartCost guides · Updated 2026-10-30
When is Swiss turning cheaper than a CNC lathe?
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Swiss turning can win when a slender part repeats enough to recover its setup, bar-feed, and live-tooling costs. A conventional lathe can win on prototypes and short runs. This engine comparison uses the same 303 stainless pin on both routes at quantities 10, 100, 1,000, and 10,000 so the break-even question is answered with arithmetic.
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The route changes more than the hourly rate
The CNC-lathe workholding is a stepped shaft from round bar with a 65-minute setup. The Swiss workholding is a slender pin with cross holes and a 120-minute setup. They are representative route tests, not identical CAD parts: use the part's real geometry before treating the break-even quantity as a decision.
The comparison is still useful because it highlights the variables that decide the route: setup, run minutes, workholding, bar handling, and secondary operations.
- Match the route to the actual length-to-diameter ratio.
- Count cross holes and live-tool work.
- Include cutoff and remnant policy.
Find the break-even lot
At quantity 10, a conventional lathe can avoid Swiss setup and bar-feed overhead. At 1,000 or 10,000, repeat cycle time and material handling can make Swiss attractive. The table prints a lot quote for every quantity so the threshold is visible instead of implied by a slogan.
If the customer can release a blanket order, price the full release and the call-off policy. A single emergency lot may still need the short-run route.
- Use order total as well as unit price.
- Ask about release quantities and schedule.
- Do not assume the same tooling is available on both machines.
Check tolerance and outside work
The example assumes precision diameters but no plating, heat treat, grinding, or special inspection. Those requirements can alter both routes and erase a small cycle-time advantage. Add each requirement as a named operation with its own lot minimum and lead time.
The numbers are engine results from stated workholding and US catalog rates. Replace them with the shop's actual rates, tooling, and measured cycles before sending a customer quote.
- Review first-piece inspection effort.
- Add finish and secondary milling explicitly.
- Update the break-even after actual production data.
Use the result as an estimator's starting point
For this swiss versus cnc lathe cost: find the quantity break example, an estimator can challenge every swiss turning versus cnc turning input. Replace this fictional geometry with the customer's STEP file or drawing, then replace the catalog stock price, work-center rate, setup minutes, and markup with the shop's current swiss lathe and cnc lathe values.
Keep the lot setup visible when you send this quote for swiss versus cnc lathe cost: find the quantity break. Confirm stock form, material condition, tolerances, inspection, deburr, and outside-process timing before promising a ship date. If one of those inputs changes, rerun the calculation and show the buyer what moved.
- Show both unit and lot totals.
- Label illustrative values clearly.
- Have the estimator review access, tooling, and first-piece risk.
Same material family, two engine-generated turning routes
- • Material: Stainless 303; the US catalog input is $6.24/lb and machinability 0.40 relative to 6061-T6.
- • Process: Swiss turning versus CNC turning; the pricing model includes CAM programming, Turn, 2 ops, Deburr, Inspect and calculates the quantities shown.
- • Geometry: 4 × 1.25 × 1.25 in; Fictional stepped shaft with one end bore; saw-cut round bar is assumed.
- • Markup: 30% catalog default. Taxes, freight, customer-specific rates, and unlisted outside services are excluded.
- • Every dollar and minute in the table is a reproducible example from the stated inputs, not a market average or supplier promise.
| Route | Quantity | Setup min | Run min / part | Quoted / part | Lot quote | Lead days |
|---|---|---|---|---|---|---|
| CNC lathe | 10 | 126.3 | 4.7 | $46.48 | $464.80 | 9 |
| CNC lathe | 100 | 126.3 | 4.7 | $21.78 | $2178.00 | 10 |
| CNC lathe | 1000 | 126.3 | 4.7 | $15.81 | $15810.00 | 16 |
| CNC lathe | 10000 | 126.3 | 4.7 | $14.56 | $145600.00 | 23 |
| Swiss lathe | 10 | 207.8 | 2.3 | $52.49 | $524.90 | 11 |
| Swiss lathe | 100 | 207.8 | 2.3 | $10.91 | $1091.00 | 12 |
| Swiss lathe | 1000 | 207.8 | 2.3 | $4.91 | $4910.00 | 15 |
| Swiss lathe | 10000 | 207.8 | 2.3 | $3.97 | $39700.00 | 25 |
Sources and limits
Claims are dated where they can change. Product calculations are examples from the stated inputs, not a promise about a customer's quote. Competitor wording is attributed to the source shown.
- The stock price input is taken from the US catalog, which records an Online Metals check on 2026-10-21. — source (checked 2026-10-21)
Questions
Is this a guaranteed 303 stainless steel quote?
No. It is a transparent estimating example. Replace the example inputs with the customer's drawing, stock quote, current shop rates, and inspection or finish requirements.
Why does quantity change the unit price?
Setup and programming are lot costs. The pricing calculation spreads those costs across the stated quantity and keeps the per-part run time and material inputs visible.
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