Looks like too many people know how to make a nuclear weapon and some of them are ready to help anyone who wants to build a nuclear weapon for few thousands of dollars EDIT: I meant the design to build nuclear weapon is easily available. Source : http://timesofindia.indiatimes.com/...ns-secrets-case-in-US/articleshow/6576997.cms
Bullshit building even the simplest fission bomb requires tons of money . Highly specialized equipment , equipment millions of dollars in payment ,a good team and perfect fabrication of every stinking component . The fission core has to be manufactured whit a precision of 0.0025 microns or the chain reaction will not even start . And we're old fashion casting here since pressure molding will leave air gaps and bye bye fission . And this is the easiest part in the process .
You mean the theoretical phase ? It depends on the material used . Are we talking about the fission sphere ready made , do you have standard material or are we talking about material that needs to be tested for it qualities ?
How powerful do you want the bomb to be ? We're talking fission only (adding fusion will increase the costs exponentially) .