Thanks Ivo for both, reply and correcting images!!!!!
As you can see, I´m working in a carpentry in project and design department, but in my free time, I went down were the machines are!!!!
This, my first stock, are made in "anchico" wood, which is, by the gods, very hard, almost like "quebracho", this means Axe-breaker in Argentina....
Anchico is more workable whit hand tools.
That sketch on which you can see the bow irons, is one of many that I do before start cutting wood....they came from hours and hours of reserching on books and finally on this web site, thanks for exist!!!!!
I already have a piece of steel for the prod.....notice that I´m using correctly the terminology

.......
And about the trigger and nut stuff, I was doing the drawings, (I´ll post it ASAP) but I´m not sure of what kind of release method to use, roll nut usually system, or pin up (or push up pin, or whatever you call it)
I know that this is my first work, and I know that there will be a lot of proves and errors on it, but still I´m very happy and enthusiast about my "JUAN the Second", that´s what i call this model.....
Ok fellows, return to walk, appreciate thy help....!!!!!!
And Ivo, thanks again...!!!!!