Has anyone used hot knives to smoke weed, or can you only do that with hash?

How do you do this trick? I've heard its cool and I want to learn how to do it. Any help is appreciated. Thanks.
RIP ODB Reviewed by RIP ODB on . Hot Knives Has anyone used hot knives to smoke weed, or can you only do that with hash? How do you do this trick? I've heard its cool and I want to learn how to do it. Any help is appreciated. Thanks. Rating: 5