Datum Selection for CNC Machining: How to Choose and Apply Datums
Datum selection decides how a part is located and inspected. Learn how to choose primary, secondary, and tertiary datums that match real machining practice.
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Drawing & Inspection
Practical engineering guidance for CNC machining decisions.
Latest technical guides
How to Specify Position Tolerance for Hole Patterns in CNC Machining
Learn how to correctly specify position tolerance (GD&T) for hole patterns on CNC machined parts. This guide covers datum selection, tolerance zone interpretation, composite tolerances, inspection considerations, and common drawing mistakes to ensure your parts are manufacturable and cost-effective.
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How to Prepare a 2D Drawing for CNC Machining
Prepare a clear 2D drawing for CNC machining with datums, tolerances, threads, material, finish and revision control for accurate quotation and inspection.
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