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A decision matrix for resin selection mapped to application requirements, industry-to-resin guide, and 3 cost tiers. Covers China sourcing implications and factory pool impact by material family.

This guide covers every major type of machining process used in custom parts production. It splits processes into two categories: conventional (turning, milling, drilling, grinding, broaching) and non-conventional (EDM, laser, waterjet, ultrasonic). Each process is broken down by the tolerances it achieves, the materials it works with, relative cost, and the production volumes it suits best. The guide also clarifies where CNC fits in, since CNC is an automation method, not a machining type. A full comparison table and FAQ section help readers match the right process to their part without needing to dig through multiple sources.

Die casting is for metal parts; injection molding is for plastic. This guide covers tolerances, tooling costs, and a practical decision matrix to help you choose.

A technical and sourcing guide to automotive injection molding: key materials (PP, PA66, PPS), specialist techniques, IATF 16949 & PPAP requirements, and a China sourcing framework for procurement teams.

Material selection determines whether a CNC milled part meets its performance requirements, stays within budget, and can be machined to the required tolerance. This guide compares the four major CNC milling material categories: aluminum alloys, stainless steel grades, titanium, and engineering plastics. Each section covers grade-level differences, cost trade-offs, machinability, and which surface finishes are compatible with each material.

Sourcing aerospace parts CNC machining from China requires the same certification, traceability, and inspection standards as any other supply source. This guide covers how to confirm AS9100 Rev D status in the IAQG OASIS database, what constitutes genuine material mill traceability, which tolerance tiers China factories hold on aerospace features, and how to enforce AS9102 First Article Inspection through the purchase order.

Poor tolerance specification is the leading cause of inaccurate quotes, failed First Article Inspections, and unnecessary rework on CNC milled parts. This guide covers how to specify CNC milling tolerances on a technical drawing, from setting a default ISO 2768 class in the title block to identifying features that genuinely require tight individual callouts. It also covers how surface treatments like anodizing and plating affect fit-critical dimensions, what tolerance tiers China CNC factories actually hold across general, precision, Swiss, and EDM processes, and how each tier drives per-part cost.

From hourly rates to per-part pricing — see what CNC machining actually costs in China and how to get accurate quotes from verified factories.

82.2% of China's verified CNC output comes from just three provinces — know which one matches your industry before you request a single quote.