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I have a mesh which has many UV maps and a lot of textures applied to it. Everything is in one material.

Is it possible to Create a final UV map And bake the textures together in one big image?

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It is possible. I have the similar case as yours. I've got a model, which consists of multiple separate parts. Each part has its own single material and own textures. enter image description here

First join the meshes together with Ctrl+J.
enter image description here

Next create a new UV Map (press the '+' button in the UV Maps panel of the Mesh Data header and add a new image in the UV Editor window. enter image description here

Unwrap your mesh with U-->Unwrap. enter image description here

Go to Render header, set the bake mode to Textures and hit the BAKE button. It will create one big color texture map from the all textures you've apllied. enter image description here


EDIT: Here's a case, where object has one material and multiple textures applied to each face of the cube (via Unwrap-->Project from View(Bounds)). Every face has its own UV Map slot. enter image description here

I then marked seams for the cube, unwraped it and created new UV Map for it (called 'all'). Then baked the Textures. And here's the result: enter image description here

Hope it'll help you.

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  • $\begingroup$ In my Case its a single mesh. If you join meshes together with ctrl+j you effectively do not have a single Material anymore. Which in my case I do. The Probelm I have is how to enable specific UV Maps for Specific Textures on one material and bake it together. $\endgroup$ – user24962 Jul 16 '16 at 1:18
  • $\begingroup$ I've updated my answer. If it doesn't help, please provide more information about your textures setup or maybe post your .blend via blend-exchange.giantcowfilms.com $\endgroup$ – Paul Gonet Jul 16 '16 at 12:00
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You can choose from UVMaps using "UV Map" node (under input in material node editor), or you can use "Atribute" node and connect vector output to texture and write UVMap name to it. Also check Texture Atlas which been develop for baking textures from multiple object to one. It create one object and don't change your original objects. Here you can easily make new UVMap for baking textures to it.

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