Yes, over past decades, quite sophisticated electronic interlocks / coded links etc. are a part of all operational devices. And as about everbody realizes now, for an implosion device to work: simultaneity of the multiple detonators is - simply crucial.

Remember too, possession of a functionable 'missile' means that the difficult shaped charges of suitable er 'brissance' are in place. Replacing a sophisticated, coded initiating electronics with one designed for mere: simultaneous signals to the detonators - will do very well. (You might well screw up the extra pre-steps needed for fusion devices to operate optimally.. so ??) Simply scrap the appurtenanaces for arming, protection, prevention. Not 'simple' but: basic electronic theory with a plethora of semiconductor devices to assist one. All the intricate physics has been done.

That said, and given that Pu is unsuitable for a vastly-simpler gun-type device (Pu will pre-maturely explode the device, because of its neutron capture cross-section) - U-235 still abounds: what else ya gonna do with all the Oak Ridge effluent?

THAT is a design project much easier to accomplish with garden-variety materials and no PhD (though that would help). One can imagine it all to death, of course - and the amateur could *never* construct a functional attache-sized device! But.. Even a crummy say "70 ton" yield, in any number of places -

"Not to worry" is the ostrich position. To worry into distraction - the ignorant alarmist's. Something in between seems appropriate.



A.