User blog comment:Kaido King of the Beasts/Chapter 822: The Big (Plot) Jump/@comment-27930128-20160412054732

I believe that Franky could come up with some idea of new weapon. I still expect that Franky is capable of something more powerfull and interesting, just like what he demonstrate in Fishman Island and with the help of the blueprints he obtain from Vegapunk's lab. I think that there is more to reveal behind his craftmanship skills.

He spend a lot of time crafting weapons a.k.a his BF and eventually develop his craftmanship ability during his childhood and modify his body into cyborg. Finally, Thousand Sunny is the result with mindblowing features. Since the existence of Thousand Sunny, we all know that only a few ships with good technology that capable of doing something.