CNC machining knowledge center

CNC machining questions, answered clearly.

Practical guidance for engineers, product developers, purchasing teams and individual inventors ordering prototypes or small-batch machined parts from China.

01 · Technology

CNC machining technical FAQ

Milling, turning, EDM, tolerances, drawings, inspection and design for manufacturability.

02 · Materials

Materials & surface finishes

Metals, plastics and appearance treatments compared by look, protection, cost and lead time.

03 · Ordering

Small-batch orders & delivery

Fast quoting, minimum quantities, production steps, packaging and worldwide transit estimates.

04 · Support

Payment, shipping & support

Payment methods, payment problems, couriers, customs, NDA protection and contacting our team.

Most asked questions

Quick answers before you request a quote

What CNC machining services does One Part CNC provide?

We provide 3-axis, 4-axis and 5-axis CNC milling, CNC turning, Wire EDM, Small Hole EDM, prototype machining, low-volume production, inspection and coordinated surface finishing. We focus on fast, small orders for customers who need engineering communication and flexible quantities.

Can I order only one CNC machined part?

Yes. One-off prototypes and replacement parts are welcome. A single part can cost more per unit because programming, setup and inspection are distributed across only one piece, but ordering one part is often the fastest way to verify fit and function before a batch.

What information is needed for a CNC machining quote?

Send a 3D CAD model if available, a 2D drawing for tolerances and threads, material, finish, quantity and delivery country. Design files are optional on the initial form: you may describe the requirement first and send files later under an NDA.

How fast can a small CNC order be produced?

Simple prototypes may be completed in several working days after design confirmation and payment. Complex geometry, tight tolerances, special material, heat treatment or cosmetic finishing add time. Your quotation should state both production lead time and estimated shipping time separately.

Why choose One Part CNC as a China CNC machining supplier?

Our service is designed for small companies and individual buyers: small quantities, direct technical communication, 3/4/5-axis milling and EDM options, inspection support, NDA protection, multiple payment choices and worldwide shipping. We review manufacturability before production instead of treating the order as only a file upload.

How are customer CAD drawings and product designs protected?

Files are used only to review, quote and manufacture the requested parts. We do not sell, disclose or reuse a customer design for another customer or third party without written authorization. We can sign your NDA or provide a mutual NDA before sensitive files are shared.

Which countries and regions can receive CNC parts?

We can arrange international delivery to major destinations in Europe, North America, South America, Southeast Asia, the Middle East and other supported regions. Express courier, air cargo, rail freight and sea freight are selected according to shipment size, urgency and destination.

How do I start an order?

Submit the request-a-quote form or email mark@onepartcnc.com. We review the requirement, clarify technical points, issue a quotation, confirm payment and production details, manufacture and inspect the parts, then send tracking or freight documents after dispatch.