Miguel, I'm still not certain what exactly your questions are
Chris, re-reading this again, have to say that I'm not sure about which question fron me are you not certain, as the only question that i have asked here are about the anti-virus alerts that the ImageBam pictures.
I have not asked any question about the drill itself, as I really doubt that any answer could be useful to me, as my reality is very diferent from most of the other forum members.
My old man was a mechanic, a very good one indeed. He built his own bench drill and also attempted to build his own lathe, but as he wasn't a turner, the lathe wasn't finished. It is half-made still in our shed. As I'm not a turner neither, I'm not trying to build a lathe neither (althought I would like to have one to learn), From my old man, I learned to work with what I have at hand, which usually is not enough or not the best, but the other option would be stay seated waiting for the best pieces to appear, and usually that leads to nothing. That is not an option, at least for me.
I really apretiate the link that you gave me and I will readi eagerly to get new ideas. I'm always open to new ideas, as one of my College teachers said:"all together know more than any single person"
Now an update.
The drill suffered a set back. I couldn't align the two anular pieces together. Once I welded any point, the anular pieces got stuck in the pillar, due to missalignment. I tried several times with the same results.
I was trying to use the method that my old man used for his drill, but as he worked in a mechanic workshop, I think that he built the sliding arrangement, and then he mounted it in a lathe with a four jaws chuck, and then he aligned the anular pieces. I can't do that. Now I'm thinking to build a one piece sliding arrangement, to avoid stucking by welding. I will let you know once I have it.