You’re seriously underestimating the precision involved in nuclear weapons. You’re not printing any of the explosive lenses, or any part of the physics package.

You’re seriously underestimating the precision involved in nuclear weapons. You’re not printing any of the explosive lenses, or any part of the physics package. You’re not printing neutron reflectors and absorbers either. Most of all though, assuming the ability to print some of what I’ve described emerges, it will not be in one compact, inexpensive device. Your boron composite printer won’t be your explosive lens printer, and so on.