# Model Generation

This page covers what happens after you upload your product images — how the generation process works, how to review your model, and what to do if the result needs improvement.

## How generation works

{% stepper %}
{% step %}

### Click Generate button

<div align="left" data-with-frame="true"><figure><img src="/files/ucowte63YzPgnOaAR79L" alt="" width="563"><figcaption></figcaption></figure></div>
{% endstep %}

{% step %}

### Upload images

<div align="left" data-full-width="false" data-with-frame="true"><figure><img src="/files/okSZ0tJzW9niEVe7PeRS" alt="" width="563"><figcaption></figcaption></figure></div>
{% endstep %}

{% step %}

### Enter product name

<div align="left" data-with-frame="true"><figure><img src="/files/BnGEkRBo1P5C0F1UYWMs" alt="" width="563"><figcaption></figcaption></figure></div>
{% endstep %}

{% step %}

### Generate

<div align="left" data-with-frame="true"><figure><img src="/files/vYsH9P0bdt0WbAlwuxjd" alt="" width="563"><figcaption></figcaption></figure></div>
{% endstep %}
{% endstepper %}

Once you upload your images, Hangr passes them to our AI pipeline, which reconstructs your product's geometry and surface detail to produce a 3D model.

The process runs automatically — there's nothing you need to do while it's in progress. Most models are ready within a few minutes, though generation time can vary depending on image complexity and current queue load.

{% hint style="info" %}
**Credit usage**

Each generation attempt uses credits from your account. Credits are only deducted when generation is complete. Credits never expire, so unused credits carry forward indefinitely.
{% endhint %}

## Reviewing your model

Once generation is complete, open the model in the Hangr dashboard to preview it.

In the preview, you can:

* **Rotate** the model in any direction by clicking and dragging
* **Zoom** in and out to inspect surface detail
* **Publish** the 3D model to the live viewer

Take your time here. Check that the geometry looks accurate, the proportions are correct, and the surface detail is consistent across all sides.

## Model quality

A few factors affect how accurate your model will be.

**Image quality is the primary input.** Models generated from sharp, well-lit, consistent images will outperform those generated from photos with shadows, blur, or mismatched lighting. If the model doesn't look right, revisiting your images is usually the fastest fix. See the [Image Capture Guide](/hangr-docs/hangr-platform/image-capture-guide.md) for details.

**Complex surface detail is harder to reconstruct.** Very fine textures, embossed patterns, or highly reflective surfaces may not reproduce perfectly. The overall shape and proportions will typically be accurate; fine surface detail varies.

**More angles produce better results.** If you only uploaded one or two iimages, adding a third or fourth angle and regenerating will usually improve the output.

## Requesting a regeneration

If you're not satisfied with a model, you can regenerate it from the dashboard.

Before regenerating, consider whether the issue is likely to be fixed by the same images or whether you need to re-shoot. Common reasons to re-shoot first:

* Shadows covering part of the product
* Blurry or low-resolution images
* Inconsistent lighting across angles
* Background that blends with the product

If your images are good and the model still looks wrong, regenerate from the same set — results can vary between runs.

{% hint style="warning" %}
**Regeneration uses credits**

Each regeneration attempt costs the same number of credits as the original generation. Make sure you're happy with your images before regenerating.
{% endhint %}

## Assigning a model to a product

Once you're happy with a model, assign it to a product in your Hangr dashboard. From there, you can publish it to your Shopify store.

A product can only have one active 3D model at a time. Assigning a new model to a product replaces the previous one.

## Where to go next

* [Shopify Integration](#) — publish your model to your store
* [Image Capture Guide](#) — improve your images before regenerating
* [Troubleshooting](#) — specific generation issues and fixes


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