Sword Trail – Blender Add-on

The Sword Trail add-on generates procedural slash trails in Blender using Geometry Nodes. Select your blade, click one button, and the add-on measures it, configures the modifier and assigns a material for you.
It reads where the blade is on every frame and builds the ribbon from that, so if you change the swing there is nothing to re-bake or re-offset.

Ships with three trail materials, each with its own controls.
Requires Blender 5.0 or newer.
Built and tested in Blender 5.2
Feedback is welcome.

What the add-on does for you

  • Adds and configures the Geometry Nodes modifier in one click
  • Measures the blade automatically — long axis, grip end, point, and a mid vertex
  • Detects curved blades and bows the trail to follow a katana or scimitar
  • Places the modifier below your Armature modifier, so rigged weapons work
  • Slash Start / Slash End buttons to keyframe the trail on and off per swing
  • Edit Trail Material button, so the material opens in the Shader Editor

Controls

  • Timing — trail length and fade out speed
  • Shape — width, taper, base and tip offsets, smoothness
  • Look — material and scroll speed
  • Three materials with their own node groups: Toon Fire, Energy Blue and Plasma Flame — flame count and separation, core width, filament detail, opacity, emission, hue and saturation
  • Every control has a tooltip

Good to know

  • The trail is built by a simulation zone, so play forward from frame 1 to let it accumulate
  • Keyframe the trail off between swings, or a combo smears into one continuous ribbon
  • Works in both EEVEE and Cycles

Included file:
– Add-on zip. Drag it straight into Blender, no unzipping needed.

Tutorial:

Sword Trail – procedural slash trails in Blender


Also free: the material showcase project

A Blender project with all three materials and six preset setups, ready to open and pull apart. Separate download:
Slash Material Showcase – Blender Project


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