I wonder if the day where it will be possible to duplicate objects at 100% (even a calc, for example) will ever come

ah! to solve the issue with impossibly-shaped objects, you would have to build a printer that basically 'holds on' to the most recent layer, thus suspending it if necessary, until it pushes the next layer through. So, instead of seeing it build up from a base, you would see it lowered down as it was built

ah! to solve the issue with impossibly-shaped objects, you would have to build a printer that basically 'holds on' to the most recent layer, thus suspending it if necessary, until it pushes the next layer through. So, instead of seeing it build up from a base, you would see it lowered down as it was built

That would be a very interesting idea, someone should try this.

It would be pointless. The same thing can be done with support material.  So far, atomic printers have proved more elusive.  A few major problems is see:
1. energy requirement
2. Elements reacting with air, or leftover chemicals inside chamber for deposition or reaction.
3. Chemical form. Eg, printing crystals.
4. Build time.  Most likely days to weeks.