What can destroy a lightsaber?
What can destroy a lightsaber? Practically nothing can destroy a lightsaber and there's almost nothing that a lightsaber can't deflect or penetrate. Interestingly, as shown a few times in The Mandalorian season 2, there's some material that can withstand a lightsaber blade - Mandalorian beskar, for one.
What is the weakest lightsaber?
TRAINING LIGHTSABER The weakest and most harmless type of lightsaber is the one that has been “baby-proofed”: the training lightsabers. As the name implies, this type of lightsaber is only utilized in the context of training very young Jedi to one day become Jedi Masters.