Quick start

1. Edit > Preferences > Add-ons > Install from Disk > pick Timeworn_v1.0.0.zip > tick the checkbox.
2. In the 3D View press N and open the one99addons tab > Timeworn (also in the Object menu).
3. Select one or more objects, choose the Surface (Painted Metal, Bare Metal, Plastic, Wood) and click an Age: New, Used, Abandoned or Post-Apocalyptic.
4. Tweak the sliders in the sub-panels if you want. Remove Wear puts everything back exactly as it was.

Panels

• Global: wear amount, pattern size, seed (New Pattern), per-object variation, bump strength, Unique Copy, Edges mode (Mesh = Cycles + EEVEE, Bevel Node = Cycles only).
• Surface Detail: smudges and wipe marks in the shine, fine relief and colour fading on your own material.
• Real Damage: real chips on the edges and real dents (geometry), amount / size / depth, Detail. Never deeper than 12% of the local thickness.
• Edge Wear: amount, width in metres, breakup, primer band and colour, metal colour, metallic, roughness.
• Cracks: amount and size (small for paint, large for walls and concrete).
• Cavity Dirt, Rust, Scratches, Dust, Streaks & Stains (with Ground Dirt height): each with its own sliders.

Tools

• Copy to Selected: copies the active object's wear settings to the other selected objects.
• New Pattern: new random seed so objects don't look alike.
• Unique Copy: weathers only the selected objects even when their material is shared.

Under the hood

Your shader is kept. A node group "Timeworn · Stack" is inserted between your shader and the Material Output, and every effect is a named node group ("Timeworn · Edge Wear", "Timeworn · Rust"...). Edges and real damage come from a removable Geometry Nodes modifier "Timeworn Geometry". Everything is regular Blender nodes: a weathered file renders the same on a computer without the add-on.

Demo scenes

Timeworn_v1.0.0_Demo_Scenes.zip contains the workshop (45 objects) and the hero scene (3D title letters, oil drum, gas bottle, valve on a wet floor), both weathered with Timeworn.

Requirements

Blender 5.2 or newer. Cycles or EEVEE.