Uv mapping problem Zbrush

manolchev7008

I am pretty new to Z-brush and not sure if this is the correct way to do this , so I am going to explain what exactly I did:

1: I made a model in Google Sketchup and exported it to obj format.
2: Imported to Z-brush.
Model: https://s17.postimg.org/hgjnr3okv/model.png
Model with polyframe on: https://s17.postimg.org/wnznbggfj/mo..._polyframe.png

3: I go to Uv-master and click on unwrap.
Uv map: https://s17.postimg.org/e0rjhjrcf/uv_map.png

4: Then I go to texture map->create->new from uv map. And I get the uv map wrapped around my model (it has some funky colors for some reason...)

Now I want to paint on the uv map/texture that was just created. To do that I go to:

5: projection master->drop now.
6: Then I paint a simple color on part of the model and after I am done I disable the projection master.
Coloring in projection master: https://s17.postimg.org/afvnybmsv/painting_model.png
After finishing coloring and picking up : https://s17.postimg.org/z7va5k3zj/pa...picking_up.png

Now here is the problem , after I finish painting and click pickup some of the parts that I just painted do not remain painted. The color there just disappears or moves to a completely different part of the model. I suspect that the uv map that was created is wrong since it looks a-bit strange but I dont have much experience with this so I cant be sure.

cryrid

The polyframe leads me to think that the mesh isn't as clean as it looks on the surface. For instance, you can see areas where the edges start to go in a direction but then suddenly terminate (and not in a way that makes sense with the edges that are fully visible). I'm thinking you have polygons that are occupying the same space, which would confuse Projection Master. 

Also, UV Master isn't really geared for hard-edged models with lots of sharp corners. It will still unwrap it, but the result won't be an efficient use of texture space or vertices, and it wont be easy to work with in other programs like photoshop. 

manolchev7008

I see ... I also thought there might be different poligons on the same space , and I went to sketchup and indeed that was the case.However after correcting that I still had the same problem , it was better than before but still not perfect.  In that case what program would you recommend that I use instead of Zbrush(uv-master)