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NURBS CAD Sculpting·OBJ · FBX · STEP

3D Models for Plasticity

Hard-surface references, game-ready assets, and finished models from independent creators. OBJ, FBX, and STEP files ready for Plasticity's NURBS workflow and game engine export.

What is Plasticity?

Plasticity is a NURBS-based CAD application built for 3D artists and game asset creators — combining the precision of surface CAD (like Rhino) with the intuitive feel of sculpting tools. Launched in 2023, it has become popular for hard-surface game assets: vehicles, weapons, sci-fi props, armor, and industrial machinery where clean topology and precise edges matter.

Unlike Fusion 360 or FreeCAD (which are engineering-focused), Plasticity is designed for artists creating game-ready content. It exports directly to OBJ, FBX, GLB, and STEP, making it easy to import into Unity, Unreal Engine, Godot, or any other 3D pipeline.

How Artists Use Purchased Models in Plasticity

Volume Reference for NURBS Tracing

Import an OBJ mesh as background reference geometry. Use it to understand form and proportion while building clean NURBS surfaces on top — faster than sculpting volumes from scratch.

Scene Props and Finished Assets

Combine Plasticity-made hero assets with purchased background props (furniture, crates, barrels) exported from Plasticity into the same scene. Saves time on secondary asset creation.

Modular Kit Parts

Download modular hard-surface kit parts as OBJ, import into Plasticity, and combine/extend them with your own NURBS geometry for faster environment asset creation.

Retopology Base Mesh

Use a high-poly OBJ as the target for retopology. Build a game-ready low-poly mesh with clean NURBS topology in Plasticity, then bake normals for engine use.

Format Guide for Plasticity

FormatPlasticity ImportBest Use Case
OBJ✅ Native importReference mesh, retopology target, finished asset assembly
FBX✅ Native importAnimated assets (if workflow supports animation), game-ready meshes
STEP✅ Native importParametric solid — editable NURBS geometry in Plasticity
GLB/GLTF✅ via importPBR-material game assets, web preview
STL✅ via import3D print prep, mesh reference — no parametric data

Why Proofly for Plasticity Assets

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3D Viewer Before Buying

Inspect geometry quality, poly count, and topology in the browser before purchase. No surprises when you import into Plasticity.

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One Payment, Permanent License

No subscription. Every purchase is permanent — download your models any time, use commercially, keep indefinitely.

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HiddenMark Per-Download

Every file download embeds an invisible watermark. If your purchased models are redistributed without authorization, the source is traceable.

Frequently Asked Questions

What 3D file formats does Plasticity use?+

Plasticity uses its own .plasticity native format, but imports and exports widely: it imports OBJ, FBX, STL, STEP, and IGES files. It exports OBJ (with options for creases and subd-friendly topology), FBX, GLB/GLTF, STL, and STEP. For taking 3D models purchased elsewhere into Plasticity as reference geometry or as a base mesh, OBJ is the most reliable import. STEP imports solid NURBS geometry natively into Plasticity's kernel, which is ideal if you want to edit parametric surfaces.

Can I use purchased 3D models as reference in Plasticity?+

Yes. Plasticity supports importing reference mesh geometry (OBJ, FBX) that you can use as a volume reference while building clean NURBS surfaces over it. This is a common hard-surface workflow: import a rough mesh reference, use it as a sculpt target, and trace clean NURBS surfaces in Plasticity's CAD environment. The reference mesh is not part of your output — your exported NURBS model is built independently. Purchasing high-quality reference meshes (detailed vehicle bodies, machinery, props) saves the time of building initial rough volume from scratch.

What kinds of 3D models work best in a Plasticity workflow?+

Plasticity excels at hard-surface, industrial design, and product visualization — so models in those categories are most useful. Vehicle bodies, consumer electronics, weapons, armor, spacecraft, and machinery reference meshes are all valuable starting points. Plasticity's NURBS kernel handles smooth surfaces and precise edges well, so it's not ideal as a destination for organic mesh sculpts (use ZBrush or Blender for those). The output from Plasticity is typically a game-ready mesh exported as OBJ or FBX for Unity/Unreal/Godot.

Is Plasticity good for game asset creation?+

Plasticity is increasingly popular for creating game-ready hard-surface assets — vehicles, guns, sci-fi props, armor, and industrial machinery. Its NURBS-based modeling gives cleaner surfaces and more predictable geometry than polygon-push methods in Blender or Maya for mechanical shapes. Many indie game studios and solo developers use Plasticity for concept/hero assets, then bake the high-poly to a low-poly mesh. The output OBJ or FBX files go directly into Unity, Unreal, or Godot without extra cleanup. Some creators then sell their Plasticity-made assets on Proofly.

How does Plasticity compare to Fusion 360 or Rhino for buying 3D models?+

All three tools (Plasticity, Fusion 360, Rhino) are surface/solid CAD tools, so STEP and IGES files import into all of them for parametric editing. The key difference is their audience: Fusion 360 is used heavily for mechanical engineering and CNC manufacturing; Rhino for product and industrial design; Plasticity is positioned as an affordable, artist-friendly CAD tool for game asset creation. Models sold as STEP files on Proofly will import into all three. OBJ and FBX files (mesh-only) import as reference geometry in all three but cannot be parametrically edited.

Can I sell 3D models made with Plasticity on Proofly?+

Yes. Plasticity exports to OBJ, FBX, GLB, STL, and STEP — all accepted on Proofly. For maximum sales, package multiple formats: OBJ for 3D artists, FBX for game engine users (Unity/Unreal with animations), GLB for web preview, and STL for 3D printing. Proofly takes 0% commission — buyers pay a flat $1 platform fee, and you keep 100%. Every download is invisibly watermarked with HiddenMark, so you can trace unauthorized redistribution of your Plasticity-created models.

Build Faster in Plasticity

Inspect hard-surface models and design references in the 3D viewer before buying. OBJ, FBX, STEP — one payment, use forever.