@ Daithi, thanks for answering, I am instructing me in how to buy in dollars from my country. You know, a fellow student and I made a cnc machine but only drilling we do, we made a software for milling and bring the printed circuit but does not satisfy us. Us at that time we did not have the economic resources to do so, in fact, the step motors of photocopiers got damaged and so many other components, because the country did not exist or were very expensive. Now we want to improve the machine to collaborate, teach and promote the elaboration of projects in the country. Thanks again!! and be following in the themes of the forum.