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For those who don’t know the tool: Volume Forge is a volumetrics add-on for Blender that targets both Eevee and Cycles with localized light volumes and fog volumes.
What it is and what it builds
Volume Forge creates localized volumetric objects inside Blender. The intent is simple: place atmosphere only where it matters in the frame, instead of filling the entire scene with volume and then masking it back down. It is a faster and more practical path to focused volumetrics, with the additional claim that results often render much faster than physical fog applied across the whole scene. Each created volume is a mesh object with its own unique material, stored in a dedicated collection named Volume Forge. A created volume stays editable through the add-on panel rather than requiring manual rebuilding of the setup per scene.
The add-on workflow starts with four creation operators, then switches to editing controls once a valid Volume Forge object is selected.
Two volume types define shader behavior
Volume Forge exposes two volume types that differ at shader level. Light Volume uses an emission-driven volume. The store description calls it an emissive fake fog approach. The documentation describes it as usually faster to render and easier to push toward stylized light shafts, beams, and graphic atmospheric effects. The origin of this mode traces back to a widely used Blender trick: connecting an Emission shader into the Volume output, which can produce fog-like volumetrics that are often significantly faster to render than full physical fog.
Real Fog uses a Principled Volume shader and is intended for a more physically believable localized haze or fog response, including visible shadowing inside the volume. The documentation flags it as generally more expensive to render than Light Volume. Real Fog is not emissive, so it requires light in the scene to read clearly.
Two creation methods decide how geometry is generated
Volume Forge also splits creation by geometry construction. Cube is the fastest placement method. A Cube volume is created at the current 3D Cursor position, then behaves like a normal mesh object for transforms. Both Cube buttons follow this rule, and an unexpected placement typically traces back to the 3D Cursor location.
From Faces creates a volume prism between two selected quad faces. The prerequisites are strict: Blender must be in Object Mode, exactly two mesh objects must be selected, and each selected mesh must have exactly one selected quad face. If these conditions are not met, the operator stops and returns a warning instead of creating an invalid volume.
Selection order matters in From Faces workflows. The first selected object defines side A, the source side, and the second selected object defines side B, the target side. In typical Blender selection behavior, the second selected object is usually also the active object. This order defines an A to B direction used by the generated volume, including fade and spread behavior.
The prism generation reads the two selected quad faces in world space, reorders face B to best match face A, then generates the prism between them. If face A and face B do not match perfectly, the generated prism can differ slightly from the original B face. This is expected behavior, driven by a preference for planar faces to avoid twisted or deformed faces that can produce unstable volumetric results. Face B is adjusted as little as possible while keeping the generated volume clean and usable.
The four creation operators and their consequences
The Create section is always visible and shows two columns, Light Volume and Real Fog, each with Cube and From Faces options.
Create Light Volume Cube creates a mesh cube, moves it into the Volume Forge collection, assigns a dedicated Volume Forge material, and configures it in Light Volume mode. No object or face selection is required. This is positioned as a fast option for quick beam tests, early look development, and stylized shafts that do not need to be built between real surfaces. After creation, Cube-built objects expose the full Fade Direction control because the internal fade direction is not locked by geometry.
Create Light Volume From Faces builds a light volume anchored to scene geometry. It uses the two-object, two-quad-face requirement and the A to B selection order. The result is a prism between the faces with a dedicated Light Volume material, and the created object becomes the active selection. Fade Direction is hidden for these objects because it is locked by the A to B construction. Invert Fade remains available to reverse the internal fade without rebuilding the object.
Create Real Fog Cube creates a mesh cube at the 3D Cursor, places it in the Volume Forge collection, assigns a unique material, and configures it in Real Fog mode using a Principled Volume. The non-emissive nature of this mode means scene lighting becomes part of visibility. Cube-created fog objects keep Fade Direction visible, along with Fog Density, Main Color, Noise controls, Volume Shape controls, and Advanced Mask controls.
Create Real Fog From Faces builds a prism between two selected quad faces using the same A to B selection logic, creates a dedicated material in Real Fog mode, and selects the new volume for immediate editing. Like the light version, Fade Direction is hidden because it is locked by the A to B construction, while Invert Fade remains available.
Panel anatomy and what each section controls
Once a valid Volume Forge object is selected, the add-on panel exposes editing sections in a fixed order.
Selected Volume shows the active object name, the current mode, and a Viewport Wire toggle used to make navigation easier when a dense volume obscures scene context.
Mask and Falloff controls the internal fade and the overall mask. Fade Direction appears on Cube volumes and defines the axis along which the internal fade travels through the voluem. Fade Start controls where the visible fade ends. Invert Fade reverses fade direction without changing the chosen axis. Fade Interpolation controls the softness or sharpness of the transition between the visible side and the masked side. Edge Softness softens falloff near the volume boundaries.
Look controls the main visual response. Emission Strength exists only in Light mode and controls how much light is emitted inside the volume, with higher values making the light volume read stronger and denser. Fog Density exists only in Fog mode and controls the density of the localized fog volume. Main Color sets the main visible color of the volume.
Noise shapes internal variation and is positioned as essential for beams, broken-up shafts, and more organic fog. Noise Amount sets overall influence. Noise Global Scale sets the base scale of the Noise Texture. Noise Detail, Noise Roughness, and Noise Distortion provide procedural refinement. Noise Scale is a mapping scale vector, and reducing the Z component is described as a key technique for stretching the pattern along the volume length for longer god-ray style streaks. Noise Location moves the noise pattern in 3D space without moving the mesh. Noise Rotation rotates the noise pattern. Ray Spread opens or tightens the internal pattern along A to B travel. Invert Spread reverses the direction of the spread effect. Noise Animation animates the W dimension of the noise, with 0 keeping it static and positive or negative values moving it in opposite directions. Animated controls can be keyed directly when the small dot appears next to the parameter in the add-on UI.
Volume Shape controls tube-like rounding of the generated mesh through a non-destructive Bevel modifier. Enable Tube Bevel activates the modifier limited to relevant edges. Bevel Amount controls bevel width. Bevel Segments controls segment count. Clamp Overlap helps prevent problematic self-overlap when bevel becomes too large. Bevel Weight Direction appears on Cube-created volumes and changes which axis the bevel edge weighting follows. On From Faces volumes, the edges marked with bevel weight are the edges adjacent to the source and target faces.
Advanced Mask controls the tail end of the internal mask. Fade End controls where the fade reaches its end position. Shadow Color controls the color used on the darker side of the mask. Fade Start, Fade End, Main Color, Shadow Color, and Invert Fade together define how the volume transitions between a cleaner visible side and a darker masked look.
Marketplace details, compatibility, and licensing
The listing price is $19. The listing includes Blender Version 4.5 through 5.1, render engine usage in Cycles and Eevee, and license as GPL. The listing also states that future improvements are planned and that updates remain free for purchasers. Volume Forge is sold on Superhive.
New tools and innovations should be tested before use in production, especially when visibility depends on lighting, scale, render settings, and mask values that can shift between shots.
