@Joao Just ‘Open’ the file Ralph provided. Use ‘Open’ or double -click that file. 
It is a vector set to ‘Line’ already. You just need to adjust the speed and power setting for your laser and run the file. That is it. You do not need to do any of the rest suggested. Just run Ralph’s file. Have you tried that?
Yupi ! Thanks I have no one rib cuted in a few seconds.
To do another one, they are diferent frm each other, I must import another draw, or file. I try with one of mines and it wents like oldtime a lot of time, line bye line. So This is the draw I must save with oth termination, another kind of file, that you say before. Will try.
Thank you very much ! You make me so happy. Thanks again, now I need to practice. And sleep