mingilator

3 shells obv

Are you talking about lftr high temp low pressure reactors? AFAIK there are still some major material engineering problems outstanding there, dealing with the corrosive nature of the liquid salt being one of them

Though a human on a bike is even more efficient!

As a single entity the hemnes 8 drawer or hemnes day bed is hard to beat (though myself and another coworker built a hemnes day bed in 19 minutes) a large besta build is the most complex, especially when there's lights involved, the results however are spectacular