Tank you for your answer, but I use all you advised me. I thought that there can be more quicker way to do it.

Hi guys! Have you any ideas with exporting geometry to the obj. format from sketchup? SketchUp cant do it with my model, TIGs plugin do it too slow (1.5 hours) (I tried to do it by parts, but even one indivisible part exports 0.5 hour).