What is Tolerance Selection?
Tolerance Selection is essential knowledge for designing CNC machined parts. Balance cost and function.
Key Principles
- Understand manufacturing constraints
- Design for cost-effectiveness
- Consider material properties
- Plan for quality inspection
Best Practices
ISO 2768, ANSI Y14.5.
- Communicate early with your machining partner
- Use standard features and sizes
- Specify tolerances only where critical
- Consider secondary operations
Common Mistakes to Avoid
- Overly tight tolerances
- Unnecessary complexity
- Ignoring tool access
- Poor datum selection
Why Follow These Guidelines?
Following Tolerance Selection guidelines helps you:
- ✅ Reduce manufacturing costs
- ✅ Improve part quality
- ✅ Shorten lead times
- ✅ Avoid redesign iterations
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