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PTMD OBJ
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Convert PTMD to OBJ

Can you convert PTMD to OBJ?
Verified by Adam B.· reviewed by FE Editorial ·updated Aug 29, 2026
QUICK ANSWER
Is it possible to convert PTMD to OBJ?
No - not a direct conversion.

There is no direct .ptmd to .obj conversion because .ptmd is really a Lua file describing a Polytoria model (parts, properties), not raw geometry. The workable path is to import the .ptmd into Polytoria Creator and export any mesh parts to a 3D format from there.

No direct path
Also to OBJ: USD · LWO · LIB

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Tested on macOS, Windows & Linux
Last verified Oct 2026

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Why convert PTMD to OBJ?

People want .obj to open a Polytoria model in Blender or another modeler, but .ptmd is just a .lua script renamed with a .ptmd extension, produced when exporting from Roblox. It stores block/part definitions in Polytoria's own schema rather than the vertices and faces an .obj needs.

How to convert PTMD to OBJ

Polytoria Creator FREE

Use the Model menu to import the .ptmd file, then export or save mesh parts through Creator's export options rather than expecting a direct .obj.

Blender (via exported mesh) FREE

Once a mesh part is exported from Creator to a supported format like .glb, open it in Blender and re-export as .obj with File > Export > Wavefront (.obj).

About these formats

.PTMD Polytoria Model

A PTMD file is a Polytoria Model, a single reusable 3D model saved from Polytoria Creator, the editor for the block-based game platform Polytoria. It stores an object hierarchy along with…

Open .PTMD details →
.OBJ Wavefront OBJ (3D geometry)

An OBJ file is a 3D model in the Wavefront OBJ format - a plain-text list of vertices, faces, and surface normals. Open it free with Blender, the Microsoft 3D Viewer on Windows, or…

Open .OBJ details →

Quality & what to watch

  • .ptmd is Lua/script data, so scripts, properties and Polytoria-specific parts have no equivalent in a plain .obj.
  • Only actual mesh geometry can survive the trip; primitive Polytoria blocks may not export as editable meshes.
  • There is no offline converter that reads .ptmd directly - it must go through Polytoria Creator first.

Frequently asked questions

Is `.ptmd` a 3D mesh file?
No. It is a Lua script (a renamed .lua) describing a Polytoria model's parts and properties, not raw geometry.
Can Blender open a `.ptmd` file?
Not directly. You must import it into Polytoria Creator, export a mesh, then bring that into Blender.
Why did my `.ptmd` come from a `.lua` file?
Exporting a model from Roblox with the RTP plugin produces a .lua file that you rename to .ptmd for Polytoria.