I know that medieval smiths certainly could weld together the shards of a broken sword, or even sections of different blades, But would the blade thus produced be of useable quality, or it would it always be likely to break along the joins?
I'm asking mainly in respect of the two-hand sword in Scotland that is known (certainly incorrectly) as 'the Sword of William Wallace'. The blade of that sword was created by hammer-welding three sections of different blades together. Would anyone ever have make a real weapon that way, or only a fake or ceremonial 'bearing' sword?
Update: SomeDrunkGerman, your answer is irrelevant. I know about Damascus steel: but if you've read the question you know it's not about making blades, but bodging bits of blades together.
Update 2: Enguerrard: No. What you're talking about is 'pattern-welding', which involves 'braiding' narrow strips of metal together. You could certainly take shards of blades, hammer them out , cut them into strips and use them for pattern-welding, but obviously you would then have destroyed the shards.