Doosan CNC Price: What the Number Actually Covers

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  Key takeaways
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  What Moves a Doosan CNC Price Quote
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  How a Doosan CNC Price Quote Is Built
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  Which Machine Type Justifies the Higher Doosan CNC Price
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  Tolerance, Finish and the Real Cost of Tightening Up
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  Five Vendor Checks That Matter More Than the Lowest Doosan CNC Price
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  How to Compare Doosan CNC Price Quotes Line by Line
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  Common Mistakes That Inflate a Doosan CNC Price
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  Step by Step: Getting a Usable Doosan CNC Price

A Doosan CNC price quote for a machined part has four buckets: programming and setup, material, machine run time, and finishing or inspection. Vendors who quote one lump sum are not hiding anything on purpose, but you cannot tell which bucket is heavy. Ask for the split. On a typical aluminium bracket, material might be 15 percent of the total and run time 50 percent. On a titanium housing, material can pass 40 percent.

Machine run time is the bucket buyers underestimate. A Doosan machining center cutting 6061-T6 at moderate parameters removes metal quickly. The same part in 17-4PH stainless runs at roughly one third the cutting speed, so the machine clock keeps turning. That is why the same drawing can come back at two very different prices from two shops with similar equipment.

Setup is where small orders get expensive. One prototype on a 5-axis center still needs workholding, a probe cycle and a first-article check. Those hours do not shrink because the order is one piece. This is the main reason prototype pricing per unit looks high, and why the per-unit number falls fast as quantity climbs.

Finishing and inspection close the quote. Anodizing, bead blasting or laser marking are priced per batch or per part depending on the line. Full inspection at ±0.005 mm tolerance costs real time. If your drawing calls for a report on every part, that line item should be visible, not buried.

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  Setup does not scale downOne part still needs fixturing and a first article.
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  Run time follows the materialStainless and titanium cut slower than aluminium.
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  Inspection is a line itemAsk whether reports are per batch or per part.

A 3-axis vertical mill handles prismatic parts with features on one or two faces. If your part is a plate with pockets, holes and a flat back, a 3-axis machine is the right call and the cheapest route. Paying for 5-axis capability on that part buys nothing.

A 4-axis mill or a mill-turn center fits parts with features around a cylindrical axis: shafts, flanges, connectors, medical instrument bodies. One rotary setup replaces three or four manual re-fixtures, and every re-fixture is a chance to lose position. This is where the price step-up usually pays for itself.

Simultaneous 5-axis earns its cost on contoured surfaces, deep cavities and features that cannot be reached from three directions. Aerospace brackets, impellers and complex housings are the classic cases. The trade-off is programming time and a machine rate that reflects the equipment. If the geometry is simple, 5-axis is an expensive way to make a simple part.

GreatLight runs 16 simultaneous 5-axis machining centers, 12 four-axis mills, 27 three-axis machines and 16 mill-turn centers. That mix matters when you compare quotes, because a shop that owns the right machine class does not subcontract your part and add a margin on top.

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  3-axisPrismatic parts, features on one or two faces.
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  4-axis or mill-turnShafts, flanges, parts with features around an axis.
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  5-axisContoured surfaces and features with no clear approach angle.

Tolerance is the single most common reason two quotes for the same drawing differ by a factor of two. A general machining tolerance of ±0.05 mm is achievable with standard tooling and normal passes. Moving to ±0.005 mm changes the whole process: sharper tooling, lighter depths of cut, temperature control, and a probe or CMM cycle to confirm the result.

Surface finish behaves the same way. Ra 1.6–3.2 μm is what a clean as-machined pass gives you. Ra 0.8–1.6 μm needs a finishing pass with a fresh tool and correct feed. Ra 0.2–0.8 μm usually means polishing or a dedicated finishing operation after machining. Each step adds time, and time is the price.

Read your drawing before you send it out. If a ±0.005 mm callout sits on a clearance hole that does nothing, you are paying for precision the part does not use. Engineers who mark only the functional surfaces usually cut 10 to 25 percent off the quote without changing how the part works.

Inspection follows tolerance. At ±0.005 mm, 100 percent inspection before shipment is normal practice, and dimensional reports are available on request. At looser tolerances, a sampling check is enough. Tell the vendor which it is, and the quote stops guessing.

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  Mark functional surfaces onlyBlanket tight tolerances are the most common cost leak.
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  Finish is a process step, not a settingRa 0.2–0.8 μm means extra operations.
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  Say whether you need reportsPer-part reports change the inspection line item.

Certifications first. ISO 9001:2015 covers general quality systems. IATF 16949:2016 is what automotive and EV programs expect. ISO 13485:2016 applies to medical device work. ISO 27001:2022 covers information security, which matters if your drawings are sensitive. A vendor without the certificate your industry requires will cost you more later in audits than it saves now.

Lead time second. Ask when production actually starts, not when the order is acknowledged. At GreatLight, quotation and free DFM analysis come back within 12 hours, production can start within 24 hours, and parts ship in 3–5 days. A quote that is 20 percent cheaper but adds two weeks to the schedule is usually the more expensive choice.

Minimum order quantity third. If a shop will not run one piece, your prototype goes somewhere else and you lose the feedback loop. No minimum order quantity, from one prototype to 10,000+ part runs, keeps design changes cheap.

Material range fourth. A vendor stocking 6061, 7075, 17-4PH, Ti-6Al-4V and PEEK in-house quotes faster and holds a stable price. One that sources every grade per job passes the sourcing risk to you.

Confidentiality fifth. Uploads should be secure and confidential, and an NDA should be available on request. If a supplier hesitates on an NDA for a new program, treat that as a signal about how the relationship will run.

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  Match the certificate to the industryISO 9001, IATF 16949, ISO 13485, ISO 27001.
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  Ask when the spindle startsProduction start date beats order acknowledgement date.
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  No MOQ keeps prototypes movingOne piece to 10,000+ parts on the same process.

Put the quotes side by side and check four things: what is included, what is excluded, what tolerance is assumed, and what the lead time actually is. A quote that assumes ±0.1 mm when your drawing says ±0.005 mm is not a lower price. It is a different offer.

Ask each vendor to state the machine class they will use. A quote built on a 3-axis machine cannot produce a part with five-face features without extra setups, and those setups will appear as a change order later. Written confirmation of the machine class removes that argument.

Check the finishing scope. Some quotes stop at the machined surface and treat anodizing, plating or laser marking as a separate purchase order. Add those lines before you compare totals, or the cheapest quote will quietly become the most expensive one.

Finally, look at the inspection language. 'Inspected to drawing' and 'full dimensional report per part' are not the same promise. For a ±0.005 mm part, you want the second one, and you want it named in the quote.

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  Assumed toleranceA looser assumption is a different part, not a discount.
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  Machine class in writingPrevents setup change orders mid-run.
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  Finishing scopeAnodizing, plating and marking are often separate lines.

The first mistake is quoting a 2D drawing only. Without a 3D model, the vendor guesses at the geometry between views and adds contingency to the price. Send the STEP file with the PDF and the number usually drops.

The second is a drawing with no datum scheme. When tolerances reference nothing, the shop has to assume a setup and an inspection reference. Assumptions cost money, and they also create arguments at first article.

The third is mixing prototype and production quantities in one request. Prototype pricing reflects setup-heavy work. Production pricing reflects run time. Asking for both in one line item forces the vendor to blend them, and you lose the information you need to plan.

The fourth is treating material grade as interchangeable. 6061-T6 and 7075 are both aluminium and behave very differently under load and under the cutter. If the application needs 7075, say so. A substitution to hit a price target is a redesign, not a saving.

The fifth is ignoring the DFM report. Most vendors will flag thin walls, deep pockets and unreachable features before cutting. Reading those notes and adjusting the model takes an afternoon and often removes a whole operation from the quote.

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  Send STEP plus PDF3D geometry removes guesswork from the price.
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  Define datumsTolerances need a reference or the shop invents one.
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  Separate prototype and production quotesDifferent cost structures should not be blended.