How do i make my own defuse/bump maps ? They need to be iMTL file extension.
IE i make something in photoshop that i want to wrap around a body (like Gorf or other). how do i save that as iMTL ?

Gibs

When you have added materials to the various maps, and are satisfied with the result then just click on Save Material. This will create an imtl file with all the maps included.

Gerry

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System: Win 10 Pro (21H2), Asus X99-E WS, CPU i7-5930K -3,5 GHz, 32 GB DDR4 2666-16 RAM, NVidia GTX 1080 Ti GPU - 11 GB VRAM(Driver Studio-536.99), Samsung 850 Pro 512 GB SSD, 6 TB HD storage.

To clarify further, each of the channels of the material (Diffuse, Opacity, etc.) is a regular image file (JPG, PNG, etc) that you can load by double clicking on the corresponding icon. See Gerry's screenshot.

So what you need to create in Photoshop are regular image files. The .iMtl file is created when saved as material in iClone, but it is not essential unless you want to reuse the material for an other prop.

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Thanks, Animagic, that clarifies a lot.