MechaPaint, answered

MechaPaint is a standalone 3D painting and texturing app for Windows and macOS. You drop a 3D model onto the window, paint directly on its surface in 3D, and export new textures and models. It paints full PBR (color, normal, metallic, roughness, ambient occlusion and height), and your original files are never overwritten.

The download is free and it is the complete application, every tool, with no time limit. Exports carry a watermark until you buy a license. Download it here.

MechaPaint is a one-time purchase, $79 USD, and it is half off at $39.50 during the launch sale. There is no subscription. You own the version you buy for life, you get every upgrade I release for a year, and one license covers Windows and macOS. See pricing.

Yes. MechaPaint runs on macOS (Apple Silicon and Intel) and on Windows 10 and Windows 11. One license covers both.

Yes. It paints six channels: base color, normal, metallic, roughness, ambient occlusion and height. You can pick a PBR material and paint with it like a color, and every channel lands under the same stroke. Exports come out as a PBR texture set named for your engine, or as a GLB that carries the whole material.

It opens 12 model formats: FBX, OBJ, LWO, glTF, GLB, DAE, STL, PLY, 3MF, USD, USDA and USDC. It exports models as FBX, GLB, OBJ, STL and LWO, and textures as PNG or TGA. Images come in as PNG, JPG, TGA, TIF, PSD, EXR, HDR and BMP. Full format details.

Yes. It can paint a model that has no UV map at all, and Rebuild UVs makes a fresh map in one step. Paint Issues marks bad geometry, UV overlap and flipped faces right on the model so you can see what needs fixing.

Yes. MechaPaint is a standalone app that works alongside all of them. Export the textures or the whole model, and pick a naming preset for Unity URP or HDRP, Unreal, Godot, glTF and Blender, Roblox or Substance. Change the mesh in your modeler and Reload Model carries your paint onto the new geometry.

Yes. There are starters for Roblox classic clothing, R6, R15 and Dynamic Head, and exports for clothing templates, the R15 body kit and SurfaceAppearance PBR. Polytoria clothing and faces are covered too. Roblox guide.

Yes, that is one of the most common jobs it does. Bring in the GLB or FBX, paint over smeared or blurry areas, repaint faces with a real photo, rebuild the UVs if they are a mess, and export. Meshy fixes and Tripo fixes.

You paint, by hand, with your own brush. The optional AI tools work on a patch you point them at, and everything else in the app works without any AI service at all.

Yes. It opens STL, PLY and 3MF, including Bambu Studio and Orca multi-part files. Calibrate and Gradus Adeptus set true real-world size, and it exports true-scale STL, GLB and FBX.

It was built for them. Mecha Line scribes panel lines along a path, Skeleton cuts lightening frames into the normal and height maps, PBR Decals put bolts, vents and hatches on the surface and wrap them around edges, and Sandpaper wears the paint off corners first, the way real paint wears.

A mouse works fine. Pen tablets get pressure for size and opacity, with a calibration window to set how hard a full press is. Wacom, Cintiq and Windows Ink pens are supported.

Yes. Drag a Photoshop .abr file onto the window and its brushes come in. Any PNG or JPG can become a brush tip too.

Your originals stay exactly as they were. Every export writes new files, and your work saves as a single .mpaintz project file.

I do. I am Chilton Webb, an independent developer and artist in San Antonio, Texas, and I spent years in the game industry before building MechaPaint. You can reach me at [email protected] or on the Discord.