Thank you for the reply .
You are right, that's why I'm asking for the "specialists" ;-) who can define an accurate armour.
About the stress, it depends on the material and the post print.
Vaporized acetone on abs, makes the print stronger. Add to that resin on the back side of the printed part, and you have a piece strong enough.
I work with prosthetics production, and abs, petg or nylon are the choice for sturdy pieces. (Myself, would print in nylon... but sadly, can't be painted or glued...)
So, the question remains: by the image I've posted, is it possible to say the accuracy?
Thanks