Video:
1.Convert map to smd file.
2.Import maps to the program MilkShape 3D (only triangles).Delete the texture and export it as a file Autodesk 3ds.
3.Load the file into blender and set it accordingly ,and merge all groups.
4.Remove UV maps and material, and Remove Doubles
5 select the piece of map you want to port and create a separate group. Then use the option add Modifier->Decimate->Planer->Apply.
6.Export the file as .map
7.Open hammer editor and open file .map(If you get mismatched type errors you must remove them).
8.Compile the map and enjoy!!!
Tools:
Valve's cs:go maps: link
VMF to SMD: link
Blender Source Tools: link
Blender-quake bsp importer/export: link
