I have spent a lot of time testing different options in freesurfer to extract my brain for 3D printing but I could not get good results (like different parameters for skul removal and multiple images).

I think the issue is with my image is to crappy because when I have used perfect MRI scan (now I think it could have been human sliced after dead) the brain looks perfect and I was able to 3D print it. 

I attachment I am sending the comparation between results.