> ## Documentation Index
> Fetch the complete documentation index at: https://docs.3dpreppro.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Repair your first model

> Fix common 3D printing issues automatically

The repair process automatically fixes common printing issues — holes, thin walls, non-printable geometry — and optimizes your model for your printer.

<Steps>
  <Step title="Click Repair">
    From your model card on the home page, or from the model detail page, click the **Repair** button. The repair dialog opens.

    <Frame>
      <img src="https://mintcdn.com/alphaworks/ovWnUpkEFn4EqZKR/images/getting-started/repair-modal.png?fit=max&auto=format&n=ovWnUpkEFn4EqZKR&q=85&s=deb2cd5b2519dd5455d64097d862f19e" alt="Repair dialog with model type selection and settings" width="3376" height="1842" data-path="images/getting-started/repair-modal.png" />
    </Frame>
  </Step>

  <Step title="Choose a model type">
    Select the preset that best matches your model:

    * **Character** — Figurines, characters, organic shapes
    * **Mechanical** — Engineering parts, brackets, functional prints
    * **Vehicle** — Cars, aircraft, vehicles
    * **Custom** — No preset, full control over settings
  </Step>

  <Step title="Set the scale">
    Choose how to size your model:

    * **Target dimension** — Set the longest side to a specific size (e.g., 6 inches)
    * **Multiplier** — Scale by a factor (e.g., 2x to double the size)
    * **Don't scale** — Keep the original dimensions
  </Step>

  <Step title="Start the repair">
    Click **Repair Model**. A progress overlay shows the current stage and completion percentage.

    <Frame>
      <img src="https://mintcdn.com/alphaworks/ovWnUpkEFn4EqZKR/images/getting-started/repair-progress.png?fit=max&auto=format&n=ovWnUpkEFn4EqZKR&q=85&s=babc23b0bb70200c620df1128f3369b1" alt="Repair progress overlay showing current stage" width="2453" height="1492" data-path="images/getting-started/repair-progress.png" />
    </Frame>
  </Step>
</Steps>

Repair quality is now set automatically — every repair runs at maximum detail, and medical DICOM scans use an optimized resolution.

When the repair completes, you're taken to the repair detail page where you can view the fix report, compare before and after, and download your print-ready model.

<Tip>
  Not sure which preset to use? Start with **Custom** — it works well for most models. You can always re-repair with different settings.
</Tip>

<Note>
  Your first **2 repairs are free**. After that, you need a subscription to continue repairing. See [Plans and pricing](/account/plans-and-pricing).
</Note>