Cost Guide
Prices checked on Mar 1, 2026
Real data: We uploaded the same aluminum bracket (Al 6061, qty 1, as-machined) to 9 online CNC platforms. Five provided instant quotes ranging from $65.55 to $166.81. After accounting for shipping and customs, estimated delivered costs range from ~$100 to ~$167.
CNC machining cost depends on several interconnected factors. Understanding them helps you optimize your design and sourcing strategy.
Aluminum 6061 is the most common and typically cheapest CNC material. Steel, stainless steel, and titanium cost progressively more due to material price, tool wear, and slower cutting speeds. Our benchmark uses Al 6061 — expect 1.5–3x higher quotes for steel or titanium equivalents.
Simple 2.5D parts (like our benchmark bracket with holes, pockets, and chamfers) are the cheapest to machine. Parts requiring multiple setups, 5-axis operations, tight internal features, or thin walls increase cost significantly — sometimes 2–5x for the same material volume.
Single-unit prototyping (our benchmark scenario) is the most expensive per-unit price point. Setup costs are amortized across units: going from qty 1 to qty 10 often reduces per-unit cost by 30–60%. At qty 100+, per-unit cost drops further as platforms optimize toolpaths and batch processing.
As-machined finish (our benchmark spec) is the cheapest option. Adding anodizing, bead blasting, powder coating, or other finishes adds $10–50+ per part. Tighter tolerances require slower cutting speeds and more quality checks, adding cost.
This is the biggest cost factor in our data. China-based manufacturing (RapidDirect: $65.55 raw) is roughly 45–60% cheaper than US-based manufacturing ($150–167 raw) for this part. But the gap narrows after shipping and customs — the true cost comparison requires looking at delivered prices.
| Platform | Raw Quote | Est. Delivered | Confidence | Origin | Lead Time |
|---|---|---|---|---|---|
| RapidDirect | $65.55 | ~$112.00 | medium | China (Shenzhen) | Standard - 5 business days |
| Xometry | $118.10 | $118.10 | high | Global network (US and international) | Standard - 3 business days |
| SendCutSend | $150.54 | $150.54 | high | US | Default lane (arrives Mar 5) |
| Hubs(EUR 141.66) | $151.58 | ~$151.58 | medium | Global network (cross-docks in Amsterdam and Chicago) | Standard - 14 business days |
| eMachineShop | $166.81 | $166.81 | high | US | Standard - 20 days |
Benchmark: Simple aluminum bracket, CNC machined, Al 6061, qty 1, as-machined finish, standard lead time.
4 of 9 platforms couldn't provide an instant online quote for this part:
Configured to Aluminum 6061-T651/T6, qty 1, and default as-machined options, but review page still shows '$—' with 'This part needs to be configured' and only RFQ path.
Quote retrieval blocked by mandatory email verification gate; account cannot access instant quote until inbox verification is completed.
Platform explicitly states it does not provide instant quotes; route is human-reviewed quote in 24h.
Reached MISUMI/meviy login wall requiring existing account credentials before CAD upload or instant subtotal.
The $65 (China) vs $118–167 (US/global) gap is the most visible finding in our data. But raw quotes don't tell the full story. Here's what to consider beyond the sticker price:
Delivered cost: RapidDirect's $65.55 becomes an estimated $100–125 after shipping and customs. The gap with Xometry ($118) is $0–7, not $53.
Lead time: RapidDirect: 8–15 business days total (manufacturing + shipping). Xometry: 3–5 business days. SendCutSend: ~4 days. For urgent prototypes, the time difference matters.
Other factors: IP exposure (uploading designs to overseas manufacturers), communication overhead (time zones, language), customs tariff uncertainty (rates can change), and return/reorder speed all affect the real cost of ownership beyond the quoted price.
We are not recommending one over the other. The right choice depends on your priorities: budget, speed, IP sensitivity, and volume.
For a simple single-unit aluminum bracket, we received quotes from $65.55 (RapidDirect, China) to $166.81 (eMachineShop, US). Delivered costs range from ~$100 to ~$167. Prices vary enormously based on geometry complexity, material, quantity, finish, tolerances, and platform.
The biggest cost factors are: material (aluminum is cheaper than titanium or steel), geometry complexity (more setups = more cost), tolerances (tighter = more expensive), quantity (higher volumes reduce per-unit cost), finish (as-machined is cheapest), and platform location (China vs US manufacturing).
Single-unit CNC prototyping is the most expensive per-unit scenario. Our benchmark bracket cost $66–167 for qty 1. At higher quantities, per-unit costs drop significantly due to setup cost amortization. For most simple aluminum parts, expect $50–200 per unit for single prototypes.
The raw quote from China (RapidDirect: $65.55) was 45% cheaper than the average US-based quote ($159). But after adding estimated shipping ($25–40) and customs ($10–20), the delivered cost gap narrows to roughly 25–35% cheaper. Factor in longer lead times and IP considerations.
For lowest unit cost: order higher quantities, use standard materials (Al 6061), accept looser tolerances, and compare quotes from multiple platforms including China-based services. For lowest total cost of ownership, also factor in shipping, customs, lead time, and communication overhead.
For our benchmark bracket, lead times ranged from 3 business days (Xometry) to 20 days (eMachineShop). China-based platforms quote 5-day manufacturing but need 8–15 days total including international shipping. US platforms with shipping included deliver in 3–5 days typically.
Dramatically. Setup costs (fixture prep, machine zeroing, programming) are fixed regardless of quantity. At qty 1, you absorb 100% of setup. Research shows per-unit costs can fall ~78% from qty 1 to qty 100 on simple parts. Our benchmark quotes are all qty 1 — the highest-cost scenario per unit. Always re-quote at your production quantity before budgeting.
Yes, significantly. Standard tolerance (±0.005″ / ±0.13mm) is the baseline for most online platforms. Precision tolerance (±0.001″ / ±0.025mm) can cost 2x more because it requires slower machining, more inspection, and possible rework. Applying tight tolerances to non-critical dimensions wastes budget with zero functional benefit — specify only what your design actually requires.
High-cost features include: deep pockets (require longer tools, slower feeds), thin walls (vibration risk, slow machining), undercuts (require special tooling or repositioning), multiple setups (each repositioning adds 30–50% to cost), tight tolerances on many surfaces, non-standard hole sizes, and internal threads. The single most impactful DFM change is usually reducing the number of setups required.
3-axis CNC mills typically run $30–40/hour for the machine rate. 4–5 axis machines run $75–120/hour. These are machine rates only — operator labor ($20–50/hour depending on skill level), tooling, materials, and overhead are additional. Online platforms bundle all of these into a single quoted part price, so you typically won't see an hourly breakdown.
Upload a STEP or IGES CAD file to instant-quote platforms. Key platforms with instant quotes: Xometry (account required), RapidDirect, Hubs, SendCutSend, eMachineShop. Always quote at least 2–3 platforms — our data shows a 2.5x spread in raw prices for the same part. Verify what's included: shipping, customs, and tax vary significantly between platforms.
The hourly machine rate typically covers: machine operation time, operator labor ($20–50/hr depending on skill), overhead (rent, insurance, machine depreciation), and tooling wear. Setup, programming, and first-piece inspection are usually billed separately or rolled into the first-unit cost. When you get a quote from an online platform, all of these costs are bundled into a single part price — you won't see an hourly breakdown.
Price variance comes from several sources: shop location (US vs China vs Europe), equipment type and capabilities, shop utilization rate (a busy shop quotes higher), overhead structure (lease, staffing), material sourcing relationships, and business model (direct manufacturer vs marketplace). Online platforms add 15–25% marketplace margin on top of supplier costs. Our data showed a 2.5x spread across 5 platforms for the same part on the same day — this is normal, not unusual.
Rush orders require: bumping other jobs in the queue (the shop gives up scheduling flexibility), potential operator overtime, expedited material sourcing if not in stock, and air freight instead of ground shipping. Each of these adds cost. Rush premiums typically run 20–50% above standard rates. Our benchmark data: Xometry quoted 3 business days standard at $118.10. eMachineShop quoted 20 days standard at $166.81 — a case where accepting longer lead time doesn't always mean lower cost across platforms.
Yes, within a single platform — most online CNC services offer a lower-cost standard tier vs a rush tier. Accepting longer lead time allows the shop to batch your job, optimize machine scheduling, and use ground shipping. However, comparing across platforms, longer lead time doesn't always mean lower cost. In our test, eMachineShop's 20-day lead time was actually the most expensive at $166.81, while Xometry's 3-day option was $118.10. Lead time and price are correlated within a platform, but not predictably across platforms.