What is the cheapest CNC machining service online?
By raw quote, RapidDirect was cheapest at $65.55 for our benchmark bracket. But RapidDirect ships from China — after estimated shipping and customs, the delivered cost is $100–125. Xometry delivers for ~$118 all-in. The cheapest option depends on whether you compare sticker prices or delivered costs.
Is it cheaper to use a Chinese CNC service?
China-based services like RapidDirect quote lower part prices, but you need to add international shipping ($25–40) and US customs duties ($10–20). The total delivered cost gap narrows significantly. You also need to factor in longer lead times (8–15 business days vs 3–5 for US platforms) and IP/communication considerations.
How much does CNC machining cost for a simple bracket?
For our benchmark bracket (Aluminum 6061, qty 1, as-machined), delivered costs ranged from ~$100 (RapidDirect, estimated) to ~$167 (eMachineShop). The typical range for a simple single-unit CNC part is $65–170 depending on the platform and where it ships from.
Does the cheapest quote mean the lowest total cost?
No. A $66 quote from China becomes $100–125 delivered. A $118 quote from Xometry is already all-in. Always check what's included in the quote: shipping, customs, and duties can add 50–90% to a China-sourced part price.
Which platform is best for one-off CNC prototypes?
For a single prototype where speed matters, Xometry offers the best combination of all-in pricing ($118) and fast delivery (3 business days). For budget priority with more time, RapidDirect offers the lowest estimated delivered cost ($100–125) with 8–15 business day delivery.
How much price spread is there between online CNC services?
In our test (5 platforms, same Al 6061 bracket, qty 1), raw quotes ranged from $65.55 to $166.81 — a 2.5x spread. Estimated delivered costs ranged from ~$100 to ~$167, a 1.7x spread. Third-party testing found an $800+ difference across 9 services on identical jobs (All3DP Pro), though their methodology is not disclosed.
Is eMachineShop really cheaper than competitors?
eMachineShop markets itself with claims of being around 60% of competitor cost based on testimonials. Our data tells a different story: eMachineShop quoted $166.81 for our Al 6061 bracket — the most expensive of the 5 platforms we tested. Their pricing may be more competitive for specific geometries, processes, or quantities. Always get a quote for your specific part before assuming a platform is cheapest.
How does batch size affect CNC machining cost?
Significantly. Setup is a fixed cost spread across all units: fixture prep, machine zeroing, programming verification. At qty 1, you absorb 100% of setup. At qty 10, each unit absorbs 10%. Research shows per-unit costs can drop ~78% from qty 1 to qty 100 on simple parts. Our benchmark quotes are all qty 1, the most expensive per-unit scenario. If you're ordering more than 5 units, re-quote at your target quantity — the ranking may change.
Why is the first unit so expensive in CNC machining?
The first unit absorbs 100% of the fixed setup cost: fixture preparation, machine zeroing, tool loading, program verification, and first-piece inspection. These fixed costs occur once regardless of quantity — the setup cost doesn't change whether you order 1 part or 100. For simple parts, setup can easily cost as much as the machining itself. This is why prototype prices feel shocking and why per-unit costs drop dramatically at higher quantities.
Is it worth using a Chinese CNC service like RapidDirect for the cheapest price?
It depends on what you value. By raw quote, RapidDirect ($65.55) is cheapest. By delivered cost, estimated landed is $100–125 after shipping ($25–40) and US customs duties ($10–20) — close to Xometry's all-in $118.10. Additional factors: 8–15 day total lead time vs 3–5 domestic, IP exposure risk, time zone communication overhead, and tariff uncertainty (Section 301 tariffs on Chinese goods subject to change). For low-IP-risk prototypes where you can wait, RapidDirect is likely the cheapest delivered option. For anything production-critical or time-sensitive, the cost gap nearly disappears.
What are current US tariff rates on CNC machined aluminum parts from China?
Machined aluminum parts from China are subject to Section 301 tariffs, which have ranged from 7.5–25% depending on HTS code and current tariff schedules. The applicable HTS range for machined aluminum is typically 7616.99 or 8479 depending on the part's function. For our benchmark bracket, we estimate $10–20 in duties — but this is an estimate, not a verified customs quote. HTS classification and tariff rates can change. Always verify the applicable rate for your specific part before finalizing a China-sourced landed cost estimate.