> ## Documentation Index
> Fetch the complete documentation index at: https://support.lumafield.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Profile

> Full-part and per-feature Profile evaluation against an uploaded CAD model

The Profile Tool evaluates how a scanned part deviates from its nominal `.STEP` model under a Datum Reference Frame (DRF). It supports both **whole-part Profile** and **per-feature Profile** evaluation, and is the most demanding GD\&T Tool in the [3D Auto-Dimensioning](/voyager/voyager-auto-dimensioning) suite.

<Warning>
  All measurements should be performed on an [ROI](/voyager/voyager-region-of-interest) that roughly orients your part to the correct orientation. The DRF you build inherits this orientation.
</Warning>

The Profile Tool is available in [Dimensioning Mode](/voyager/voyager-modes#dimensioning-mode).

![Generating a part Profile: uploading a CAD file, defining datums and associating them between the part features and CAD features](https://lumafield-support-assets.s3.us-east-1.amazonaws.com/profile.gif)

<h2 id="requirements">
  Requirements
</h2>

Before running Profile, you need:

* **Uploaded `.STEP` of your nominal part / body.** Use the [Import Tool](/voyager/voyager-import) in the Toolbar to upload your STEP file. For a focused walkthrough see [Nominal CAD Import](/voyager/voyager-nominal-import).
* **A corresponding DRF** on both your uploaded STEP file and your scanned part. Three datums are supported in this release. Corresponding datums on each side enable datum simulation for accurate Profile evaluation. See [Datum Definition](/voyager/voyager-datums) for how to build them.

<Note>
  Voyager uses the labels you assign to datums (for example, `A`, `B`, `C`) to correlate the CAD-side and part-side DRFs. Matching labels make the datum-correlation step in the Profile workflow trivial.
</Note>

<h2 id="workflow">
  Workflow
</h2>

<Steps>
  <Step title="Define datums on your part">
    In Dimensioning Mode, use the [Datum Tool](/voyager/voyager-datums) to define datums on extracted features of your scanned part.
  </Step>

  <Step title="Upload your CAD">
    Use the [Import Tool](/voyager/voyager-import) to upload the `.STEP` file of your nominal part.
  </Step>

  <Step title="Define datums on your CAD">
    Use the [Datum Tool](/voyager/voyager-datums) again to define a corresponding DRF on the imported CAD.
  </Step>

  <Step title="Select the Profile Tool">
    Choose **Profile** from the Toolbar.
  </Step>

  <Step title="Select the uploaded CAD">
    Pick the imported `.STEP` body as the nominal reference.
  </Step>

  <Step title="Correlate datums">
    Step through the datum-correlation workflow to pair part-side and CAD-side datums. Matching labels are paired automatically; you can override any pairing manually.
  </Step>

  <Step title="Choose Profile scope">
    Select **single feature** for per-feature Profile or **whole part** for full-part Profile.
  </Step>

  <Step title="Enter tolerance and submit">
    Provide the Profile tolerance and submit. The result is rendered as a deviation heatmap with a tolerance-aware pass/fail label.
  </Step>
</Steps>

<h2 id="editing-after-submission">
  Editing after submission
</h2>

* **Tolerance** can be adjusted after evaluation; the heatmap and pass/fail label update without resubmission.
* **Leader / label orientation and position** can be adjusted to organize the scene, just like in the other Tools in this suite.

<h2 id="roadmap">
  Roadmap
</h2>

* **Profile probing** to read deviation values directly from any point on the heatmap.
* **Expanded datum support** beyond the three datums supported today.

For the full Voyager 2.0 roadmap, see the [3D Auto-Dimensioning overview](/voyager/voyager-auto-dimensioning#standards-and-roadmap).

<h2 id="related-pages">
  Related pages
</h2>

* [3D Auto-Dimensioning](/voyager/voyager-auto-dimensioning)
* [Datum Definition](/voyager/voyager-datums)
* [Direct Dimensions](/voyager/voyager-direct-dimensions)
* [Flatness](/voyager/voyager-flatness)
* [Nominal CAD Import](/voyager/voyager-nominal-import) — focused STEP-import walkthrough
* [Import Tool](/voyager/voyager-import) — main Mesh and CAD import article
* [Compare Tool](/voyager/voyager-cad-comparison) — Mesh-based comparison in Analysis Mode
* [Voyager Modes](/voyager/voyager-modes)
* [Voyager 2.0 Release Notes](/platform/voyager-release-notes) and [Monthly Highlights](/platform/monthly-highlights)