Practical writing on AI 3D generation, printing, game art and the tools around them.
Tutorial
Hunyuan3D 2.x is a shape diffusion model plus a separate texturing stage, and ComfyUI can drive both. Here is how the graph is wired, what each route costs in VRAM, and what the usual error messages mean.
Guide
A mesh is the polygon surface of a 3D object: vertices, edges and faces, plus the normals and UVs that travel with them. Here is what each part does, which properties decide what you can do next, and what each file format keeps.
Tutorial
Silhouette extrusion, lithophane height maps and AI image-to-3D all end in the same file extension and almost nothing else. Here is what each route controls, which photos survive it, and the checks that happen before the first layer.
Tutorial
Unity is Y-up and left-handed, Blender is Z-up and right-handed, and the file in between has to survive both. Two export routes, the import fields worth changing, and a repair table for the first import.
Tutorial
Cry of Fear runs on GoldSrc, so Simon is a compiled .mdl with a fixed skeleton and indexed BMP textures. Here are the two ways to change him, all twelve outfits, and what model packs really replace.
Guide
Three-dimensional means an object extends along width, height and depth, so every point needs three coordinates instead of two. This guide covers what that changes in practice: how a 3D scene reaches a flat screen, what 2D and 3D each cost, and what printing, games, film and AI generation expect from the data.
Tutorial
A toggle is any part of a VTuber model that a hotkey can switch on, off or swap while you are live: an accessory, an outfit variant, an eye texture or a facial morph. Here is how the four common kinds work under the hood and how to wire one up without breaking the rig.
Tutorial
Surface Material Override in the editor, runtime swaps from GDScript, and the shared-resource behaviour that repaints every copy of a model — plus the PBR values and import settings that make the result hold up.
Tutorial
Four routes to a figure mesh, the repair pass a slicer quietly expects, and the resin versus FDM decision, with typical numbers for scale, wall thickness and layer height.
Tutorial
Export is a decision about the next application, not about file size. What GLB, glTF, OBJ, STL and FBX each carry, what they quietly drop, and how FBX is reached when a generator does not offer it.
Tutorial
Image-to-3D predicts the geometry the camera never saw. Here is how to prepare the photo, choose between single-view and multiview engines, judge the mesh in the first minute, and export it at the right scale.
Tutorial
A stock photo gives you someone else's product in dramatic light. A generated reference gives you the viewpoint, lighting and silhouette the image-to-3D step actually needs. Here is the pipeline, the engine trade-offs and the prompt recipe.