EN
If you are budgeting a one-off prototype in 7075-T6 aluminum, here is the short answer: most shops will quote roughly $150 to $800 for a simple to moderately complex part, while a complex 5-axis prototype with tight tolerances and a cosmetic finish can run $800 to $2,500 or more. The spread is wide because a prototype has no batch to absorb fixed costs — programming, setup, and fixturing all land on a single part. This guide breaks down where the money goes in metal CNC machining for a 7075-T6 prototype, and what you can change in the design to bring the number down.
Every quote is geometry-specific, but the ranges below are a realistic starting point for a single 7075-T6 aluminum prototype, as-machined finish, standard tolerances (±0.05 mm):
| Part Complexity | Example | Typical Price (1 pc) |
|---|---|---|
| Simple 3-axis bracket or plate | Mounting bracket, a few pockets and holes | $150 – $350 |
| Moderate, multi-setup part | Housing with features on 3+ faces | $350 – $800 |
| Complex 5-axis or tight-tolerance part | Impeller, aerospace fitting, ±0.01 mm features | $800 – $2,500+ |
Ordering 2–5 pieces instead of one typically cuts the per-part price by 30–50%, because the one-time programming and setup costs are shared. If you need more than a handful of parts, ask for a small-batch quote rather than a prototype quote — the pricing logic changes completely.
7075-T6 is an aerospace-grade alloy with roughly twice the yield strength of 6061-T6, and you pay for that in two places:
Neither premium is a reason to avoid 7075-T6 when the design genuinely needs it — fatigue-critical, high-load, or weight-sensitive parts justify the alloy. But if your prototype only needs to validate fit and function, 6061-T6 will usually do the job at a meaningfully lower price.
A prototype quote is really five smaller charges stacked together. Understanding them tells you which levers to pull:
| Cost Element | What Drives It | Typical Share |
|---|---|---|
| Material | Stock size (not part weight), alloy, market price | 10–25% |
| CAM programming & setup | Part complexity, number of setups, fixturing | 25–40% |
| Machine time | Cycle time × hourly rate; 3-axis vs 5-axis | 25–45% |
| Finishing | Anodizing, bead blast, plating, polishing | 5–20% |
| Inspection & documentation | CMM reports, certificates, FAI if required | 0–10% |
Note that for a one-off part, programming and setup often cost more than the actual cutting. This is the single biggest difference between prototype pricing and production pricing, and it is why the "per-part" logic of production quotes does not apply here.
Choose 7075-T6 when the prototype will be structurally tested — loaded to failure, flown, raced, or fatigued — or when the production part is already specified in 7075 and you need the prototype to behave identically. Its combination of high strength and low weight is why it shows up in aerospace fittings, drone frames, and motorsport components.
Choose 6061-T6 when the prototype exists to check assembly, ergonomics, or appearance. It machines faster, anodizes more uniformly (7075 can mottle under Type III hard anodizing), welds far better, and costs less at every step. A quick DFM conversation with your shop about the prototype's actual purpose is often worth 20–30% of the quote.
The fastest way to turn these ranges into a real number is to send a STEP file plus a PDF drawing that calls out critical tolerances, threads, and finish. State the quantity (even if it is one), the target date, and whether you will accept design suggestions. A shop that offers DFM feedback will flag the expensive features before cutting — oversized stock, non-standard corner radii, or tolerances tighter than the function requires.
ANOK Precision Manufacturing machines 7075-T6 and other aerospace-grade aluminum alloys daily on 3-, 4-, and 5-axis centers, holding tolerances down to ±0.002 mm under an ISO 9001:2015 quality system. As a Shenzhen-based factory, ANOK combines competitive hourly rates with one-stop aluminum CNC machining, anodizing, and inspection — so your prototype arrives finished, verified, and ready to test. Send your CAD file for a free DFM review and a detailed quote, usually within 24 hours.
Only if the prototype will see real structural load or must match a 7075 production part. For pure form-and-fit validation, 6061-T6 is cheaper and faster to machine.
Standard lead time is typically 1–2 weeks including material procurement and finishing; rush service can compress machining to a few days at a premium. Add shipping time if the part comes from an overseas factory.
The usual causes are very tight tolerances, deep thin-walled features, 5-axis geometry, cosmetic hard anodizing, or a rush deadline. Ask the shop to itemize the quote — a good one will show you exactly which feature is driving the cost and how to redesign around it.