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Internal and External sketches siemens NX

Sketches that you create from within commands like Variational Sweep, Extrude, or Revolve are internal sketches. Use an internal sketch when you want to associate the sketch with only one feature.

Sketches you create independently using the Sketch command are external sketches, and are visible and accessible from anywhere within a part. Use an external sketch to keep the sketch visible and make it available for use in more than one feature.

Differences between Internal and External sketches
  • Internal sketches are accessible only from the owning feature.

  • External sketches are accessible from the Part Navigator and the graphics window.

  • You cannot use an internal sketch with any feature other than its owner unless you externalize the sketch. Once you make a sketch external, the former owner has no control over the sketch.

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