Breaching charges

[kevin.granade]

@Theodore_William

On the subject of breaching, what would be the possibility of sticking a grenade in a funnel and placing it on a metal door? Shaped charge fashion? Could require an adhesive and a string to make it work. Cheap, but one time use and LOUD.

Need some evidence it would work, sounds pretty sketchy.
Some kind of breaching charge, sure.