Merged your thread on the weapon durability and such into this one, as the information is already here.
Oh, okay, thanks. Sorry, I guess I missed sticky. I was too excited to talk about Robin.
I really can't see why Robin has to lose his weapons when he uses them too many times. It's not like he's OP with them on him at all times. I'll share with you some of my findings about his weapons here and update as I get more info. Feel free to share your findings too!
1. The Bronze Sword is used for his tilts, his nair, his u-air, his dash attack, and his first two jabs. When he loses the Levin Sword, he uses the Bronze Sword for a spell until the Convoy brings him another Levin Sword (or something). It never runs out.
2. The Levin Sword is used for his fair, his bair, his dair, and all three Smash attacks. He can use it eight times, regardless of whether the hits connect (so much for being three steps ahead, Robin - the Levin Sword has ten uses). I don't know if charging the Smash attacks make it go away sooner. It's his strongest weapon, and he gets it back the quickest of the four.
3. The Fire Tome is used for his Side B and his jab - you have to time it right. I think you just have to press A slower to land the third jab as a fire attack. I usually prefer the Fire jab because it's more powerful and it doesn't use up the Wind Tome, which he needs to recover (is this actually a real concern?). The Fire Tome lasts longer than the Levin Sword, but I don't know the exact number.
4. The Thunder Tome is used only for his neutral b, as far as I know. I thought there was a way to use a Thunder attack in his jab if he has run out of both Fire and Wind, but I don't know. I don't know how many times he can use it, but I think he can only use Thoron twice before it breaks, but if you mix it up it'll last longer. It takes longer for him to get a Thunder tome back than the Levin Sword, and I think it takes longer than Fire, but it might be the same.
5. The Wind Tome lasts the longest as far as I can tell. He uses it for his jab if you do it quickly, and for his up b. There's probably a good way to use Elwind offensively, but I wouldn't try it, because if he runs out and you get launched or have to get back up after a spike attempt (his down air spikes, as long as it's the Levin Sword - does the Bronze Sword spike too?), you will die because he will have no up b. It also fires off in random directions and probably doesn't do much damage.
6. And last but not least, Nosferatu. It lasts the shortest amount of time (3 hits - come on Robin, really? Nosferatu also gets ten uses), and is crazy hard to hit with - just like REAL LIFE. There might be a way to land it after a grab easily but I don't know which one that might be or at what percentage. Of course, if you hit with it, you get some health back and do damage, so it has the potential of being my favorite attack of his.
So these are my findings with Robin. I'm really not terribly good with him, but he's definitely one of my favorites, as I am a die hard FE fan and he's one of the most unique. It's sort of like if Samus, Olimar and Link had an orgy and he was born... or something. Anyway, what has everyone else found?