Hey there 
I have a problem with the unwrap with UV Master.
I made some space ship meshes for my game, but when I want to texture all went wrong.
I tried to unwrap a normal cube (6 faces) and the UV Master is making it a bit ugly.
So when I want to draw on it it is very complicated to get straight stuff.
How can tell UV Master to make straight lines and not those ugly stuff?
Best Regards,
Tobi
The only method that I know is to assign different polygroups to each face and turn on Use Polygroups in UVMaster.
This should layout each face separately as a square instead of the distortions you would outherwise see.
ah okay thank you
I thought there is a way to generate just strait ones.
Or how do you work with it? I guess you directly draw on your object, not on your
uv map am I right?
You can also manipulate the UVs with the transform tools.
I am not sure about your other question. In my workflow, I just create the UVs using UVMaster and export the object to another program (Substance Painter) for texturing.
Other workflows would include painting or texturing directly on the model in ZBrush and baking the paint to a texture map that is then exported.
Use the Transform tool to move the UV’s so they line up more neatly on the grid.
Okay Thank you I will give it a try 
Generally I wouldn’t recommend using Automatic UV tools for shapes like this; they’re not very suited for creating straight lines on very lowpoly faces because that isn’t what they were built for.
PUV tiles might be a better option in this case (especially since every edge is a hard edge), or you could just unwrap the cube in a standard 3d program since then you’ll have absolute hand control over the UVs.