Light bulb vaporizer? Anyone use this method?

Mkay, so I sawed off the top of an old light bulb, ya know, the ones that aren't cork-screw-y or glass on the INSIDE, and I sanded the rough edges off the top. It's completely hollow on the inside, and the top is very smooth. I rinsed out the bulb with water and dial soap completely, and dried it out with a tissue, because I don't want that white powder in there. So, it's clean and it can't hurt me. I want to use it to smoke LEGAL herbs. So don't lecture me about how i'm a bad person and i'm going to jail. Haha, I want to use it for herbs like: Damiana, Leonurus Cardiaca Sibericus, Wild Dagga, and Calea Z. Will this be a good method? I heard it's less harsh on your lungs. I'm young, I still need those! Ha, well, anyone have expierence with these plants? Tell me whatever you can. I'm here to listen. Thanks a heap!