Best way to implement a "blowtorch" slice-through walls mechanic?

Hi!

I’d like to implement a mechanic where a player can slice through a wall with a laser or blowtorch device. I would really like to do this the complicated way and actually allow the player to freehand the cut.

I know UE4 has destruction support through PhysX, but would that be the best place for me to start to achieve something like this, or is there a better option?

I know this would be simple to do with a pre-programmed animation…but where’s the fun in that?

this example is a simple place to start.
i think he basically set a series of objects around the door that you delete, then it swaps the solid door for a cut open door and a separate physics door