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Unit & Scale Doctor - Fix Mis-Scaled Blender Scenes Before Export Or Render

by Anvil Interactive Solutions·Workflow

Images © Anvil Interactive Solutions. Used for product review; image policy.

Why we like it

Unit & Scale Doctor earns its place in the Superhive library for enforcing scale and axis standards non-destructively and gating broken exports, with MIT licensing and a headless CI validator for pipeline use.

What is Unit & Scale Doctor - Fix Mis-Scaled Blender Scenes Before Export Or Render?

Unit & Scale Doctor addresses the "looks right in Blender, wrong in engine" problem by detecting and fixing unit, scale, and axis issues that cause broken lighting, physics, and exports. Originally built for production pipelines managing thousands of assets, it validates scale and orientation for Blender scenes headed to Unity, Unreal, glTF, or CAD targets. You select a target engine profile, and scene checks, rulers, axes, and export settings adapt to match it, including correct up and forward axes.

A fast scene audit flags unapplied scale, non-uniform scale, negative (mirrored) scale, scaled parents, and scene unit mismatches relative to the target profile. One-click repairs align scene units without rescaling vertices, apply scale on static meshes, and fix negative scales with automatic normal recalculation, with optional armature skipping to preserve rigs and skinning. It is non-destructive by default.

Guarded FBX and glTF exports are blocked when violations exist, backed by an on-screen warning and console report. A headless CI validator emits a JSON report and non-zero exit code for vendor intake, asset validation, and pre-merge gates. Saved fail-on rule presets enforce standards across teams and projects.

Who is Unit & Scale Doctor - Fix Mis-Scaled Blender Scenes Before Export Or Render best for?

Unit & Scale Doctor - Fix Mis-Scaled Blender Scenes Before Export Or Render is best for studios handling vendor and photogrammetry intake, game asset export to Unity/Unreal/glTF, CAD-to-game handoff, physics and collision cleanup, and team pipelines with CI validation.

How much does Unit & Scale Doctor - Fix Mis-Scaled Blender Scenes Before Export Or Render cost?

Unit & Scale Doctor - Fix Mis-Scaled Blender Scenes Before Export Or Render is completely free to download and use.

Key features

  • Profile-aware units and axes for Unity, Unreal, glTF, and CAD targets, adapting checks, rulers, axes, and export settings to the selected profile
  • Scene audit detecting unapplied scale, non-uniform scale, negative scale, scaled parents, and unit mismatches
  • One-click repairs: align units without vertex rescaling, apply scale on static meshes, fix negative scales with normal recalculation, and optional armature skipping
  • Viewport visualization with live AABB or OBB bounds, translucent fill, remapped axis lines, on-mesh unit labels, color-coded axes, and draw-on-top mode
  • Guarded FBX and glTF export that blocks assets with scale or axis violations, with on-screen warnings and console reports
  • Headless CI validator emitting a JSON report and non-zero exit code on violations
  • Saved fail-on rule presets to enforce scale and axis standards across teams and projects

Tags

#Blender#Unit Scale#Export#Pipeline#Game Assets#CI Validation#FBX#glTF

Frequently asked questions

Which Blender versions does Unit & Scale Doctor support?

Unit & Scale Doctor supports Blender 3.0 through 4.4, and has been tested on Blender 3.6 LTS and 4.4. It runs on Windows, macOS, and Linux. The tool is written in Python and targets Unity, Unreal, and glTF pipelines, with CAD also available as a profile. If you work across the supported range, selecting your target engine profile adapts scene checks, rulers, axes, and export settings automatically, so validation stays consistent regardless of which supported Blender version you are running.

How does the guarded export in Unit & Scale Doctor work?

Unit & Scale Doctor guards FBX and glTF exports by blocking them when scale or axis violations exist in the scene. When an export is blocked, you receive a clear on-screen warning and a detailed console report describing the problem, so broken assets never leave Blender. The typical workflow is to select a target engine profile, run detection, apply fixes where appropriate, verify size and orientation with rulers and bounds, then export with guardrails enabled. This keeps invalid assets from reaching the engine.

Is Unit & Scale Doctor non-destructive to my scene?

Unit & Scale Doctor is non-destructive by default. Aligning scene units to the target profile does not rescale vertices, and scale application is explicit and optional rather than automatic. Armatured meshes can be skipped to protect skinning and rigs, and the developer recommends keeping the Skip Armature option on unless you specifically need to freeze rigged meshes. Fixes such as normal recalculation on negative scales are applied only through the explicit one-click repairs, so you control when changes affect your geometry.

Can Unit & Scale Doctor run in a CI pipeline?

Unit & Scale Doctor includes a headless CI validator that runs validations without the interface. It emits a JSON report and a non-zero exit code when violations are found, which suits vendor intake, asset validation, and pre-merge gates. You can also save fail-on rules as presets to enforce consistent scale and axis standards across teams and projects. The documentation covers install, quickstart, and CI examples, so you can wire the validator into automated checks for your pipeline.

Is Unit & Scale Doctor free?

Unit & Scale Doctor is listed as free in this catalog and is distributed under the MIT license. For current licensing terms and any additional details, check the developer's page. Anvil Interactive Solutions also provides documentation covering install, quickstart, CI examples, and an FAQ, plus support through an issue tracker or support email. A feature demo video is available as well, so you can review the tool's capabilities before adding it to your Blender pipeline.

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