An engineering desk with a complex part drawing. Above it, a three-tier pyramid chart visually organizes features into Critical, Standard, and Non-Critical tiers with associated cost impacts. Data streams connect drawing features to the chart, and a tablet shows supplier SPC data, illustrating a data-driven framework to prevent cost overruns.

How to Specify 5-Axis CNC Tolerances: A Data-Driven Framework to Avoid 20% Cost Overage and Delays

Introduction Engineers specifying tolerances for 5-axis CNC machined parts face a universal dilemma: overly tight tolerances lead to skyrocketing costs and extended lead times, while overly loose ones result in assembly failures and performance issues. Industry observations suggest that up to 30% of manufacturing waste stems from specifying non-functional, excessively tight tolerances. The core problem…

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