If you're talking about a ratchet-head, then yeah, you can use it as a bowl. I've used those before, though 1/4 is the biggest I've tried. If it tastes like tire, the metal may have a coating that needs to burn off, or there might be some kind of residue on it.

As there's no sure way to know what kind of metal it's made of, I'd be careful. It's probably pot-metal, so it could contain lead and all other kinds of goodies. If you can't find foil (which is safer than some unknown), or a soda can, and you can't make a bottle bong, and can't roll a joint.. Then i guess you probably won't die using it two more times. But seriously, you can't find ANYthing to roll a joint out of?

Good luck, brother.

Addendum: You can even make a pipe out of fruit or veggies, for fuck's sake. Be creative.
Mello.as.Hello Reviewed by Mello.as.Hello on . Huge problem Okay, so I don't have a bowl anymore and I want to try and make a gravity bong, BUT, I have a huge problem. I don't know how to make anything to smoke out of and I'm low on supplies. I got this idea of someone on this board: 1. Take a 2 liter bottle and cut the bottom off. 2. Find a 5/8 size socket wrench head and use it for the bowl. Put screen into it and it fits perfectly into the top of a coke bottle. 3. Fill up a large sink, tub, or bucket with water. Rating: 5