Understanding custom machining costs helps you budget accurately for your project. Whether you need cnc machined parts for prototyping or production, several factors determine the final price of custom machined parts.
Factors That Affect CNC Machining Cost
Part Complexity
Complex geometries with tight tolerances require more machining time and advanced tooling. Custom machining of intricate parts costs more per unit but may reduce assembly costs downstream.
Material Choice
Material price varies widely. Aluminum is economical, while specialty plastics and high-performance alloys cost significantly more. Material typically accounts for 15-30% of total CNC machining services cost.
Quantity and Setup
Setup costs are amortized over order quantity. Higher volumes reduce per-unit cost for custom machined parts.
Tolerances and Finishing
Precision machined parts with ±0.01mm tolerances and secondary finishing (anodizing, plating) add cost but deliver superior quality.
2026 Cost Ranges (Indicative)
- Simple parts (single setup) — $5 to $50 per unit at volume
- Medium complexity — $30 to $150 per unit
- Complex precision parts — $100 to $1,000+ per unit
- Prototype quantities (1-10 pcs) — setup cost dominates: $150-$800 total
How to Get an Accurate CNC Machining Quote
Provide complete 3D models (STEP/IGES), material specifications, tolerance requirements, surface finish, and annual quantity. Clear specifications lead to accurate quotes for cnc machining services and custom machining projects.
Get a Competitive CNC Machining Quote
RCH Plastic provides custom machining and CNC machining services for plastic and metal parts. Send us your drawings for a detailed quotation of your cnc machined parts within 24 hours.