how to textuer parts inside models without ripping it apart

[knotty vapor]

So two things:

You can use the paint bucket tool in element mode to quickly fill an entire mesh/cuboid with one color, before putting in more detail. If you have already added detail and don't want to restart, you will have to paint it in the viewport by hiding or moving the other elements in the way, or paint in the UV tab, there is no going around that. You can use the paint bucket tool in "Connected Colors" or "Colors" mode to go faster though.

The other thing is how to fix the texture bleeding in Unity. I assume the problem is that you have not setup the texture to work well for pixel art, so because it is blurry the faces that should be hidden instead bleed over to the exterior. Tutorial on to fix it: https://youtu.be/oHlHn5yHPMI

[waxen parrot]

its not me whos importing them

im the artist not the porogrammer

ill try the bucked sens my texture is 1024x1024

[pastel pendant]

then tell that to the guy importing the model into Unity

[waxen parrot]

k ill do that soon

also

can i alredy textured teh importend part so the bucked wont work

can i copy the in work texture

so i have 2 textures

so i fill the first one and place the second on on top

[knotty vapor]

That would probably be a little slower than painting everything on a single texture, but yes you could.

You'll have to erase the parts you don't want to keep on the first, detailed texture. Keep it saved somewhere. Then you can make a copy, import it in Blockbench witth your model and Fill in the geometry with a single color using the paint bucket in element mode.
Now that you have two textures, you can merge them into one in an image editor, by putting the first, detailed one over the flat colored one.

[knotty vapor]

!close