I recall that on several occasions Jedi just shove the things as hard as they want into and through whatever they want. Especially in fighting the droids in the

I recall that on several occasions Jedi just shove the things as hard as they want into and through whatever they want. Especially in fighting the droids in the Clone Wars episodes. I assumed the slowness of sliding the blade into the door in the scene you mention was due to the thickness of the door. It couldn't be sliced open because it was too thick, therefore you melt a hole into it.