system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] Can superheavy/vehicle-grade lightsaber-like weapons exist? Could something like that deflect turbolasers or other heavy bolt weapons?

I'm asking for a friend. He likes to tinker.
gpt
Lightsabers can already block heavy blaster cannons, and in Legends, they can also block turbolasers.

In canon, the Death Star is basically a gigantic lightsaber, as it uses the same types of crystals that regular lightsabers use.