Convert X (DirectX) to STL Online — DirectX Models to 3D Print

No. STL is a geometry-only format. All materials, textures, and color data from the X file are discarded. Only triangle geometry and face normals are preserved.

No. STL is a static, geometry-only format. The mesh is exported in its current/bind pose. For animated output, convert to GLB instead.

Yes, if the X file contained a valid manifold (watertight) mesh. Load the STL into your slicer (Cura, PrusaSlicer) and check for mesh errors. Legacy DirectX models may have non-manifold edges or inverted normals that need repair before printing.

Legacy DirectX game assets frequently have non-manifold edges, open holes, and inverted normals. Use MeshLab (Filters > Cleaning and Repairing > Remove Duplicate Faces, then Close Holes) or import into PrusaSlicer/Bambu Studio which have built-in auto-repair. For complex repairs, Meshmixer (Analysis > Inspector > Auto Repair All) handles most game asset issues automatically.

X format files do not specify real-world units, so the scale depends on the original asset. Game assets are often modeled in arbitrary units. After converting, check the bounding box in your slicer. If the model is too large or small, scale it in the slicer before printing. A typical human character model should be around 170-180mm tall for a 1:1 scale print.

Binary STL stores 50 bytes per triangle. A typical DirectX game character with 5,000-15,000 triangles will produce an STL of 250KB-750KB. Text-format X files are often larger than the resulting Binary STL. Binary X files are roughly comparable in size to Binary STL for the same geometry.

DirectX X files use a Frame hierarchy with multiple named mesh objects. Each frame becomes a separate STL mesh. To merge: import the STL into Blender (File > Import > STL), select all objects (A), then Join (Ctrl+J). Alternatively, import into MeshLab and use Filters > Mesh Layer > Flatten Visible Layers to merge all pieces into one mesh.