Been smoking hard for a long time.. I know what I am doing.. have smoked out of every home made contraption you can possibly think of... Foil is fucking the worst EVER to smoke crack off of, like you would with H or oxy, because it burns TOO FAST.. too fast to where you cant inhale even 20% of the smoke it produces.. biggest waster ever.. Don't know why people are saying good ol' chore boy brillo, and a glass stem are not good methods... Not steel wool, not brass, COPPER.. BURN OFF ALL OF THE EXCESS SHIT first before rolling up, into a semi-tight ball, sticking in the end of the "glass rose" or straight shooter glass pipe, sometimes sold as a glass pen to write with too.. That is the only way I smoke crack.. if I don't have a rose and chore, I wont smoke, period! it will end up being slammed.. I will not use weed bowls, bongs, soda/beer cans, or anything but a traditional crack pipe! Make sure you change your brillo periodically, as in when it turns black and crusty, it is time for new brillo hahah.. and have a nice, glass straight shooter pipe as well.. if it has cracks in it, and starts breaking, I shit you not, it will get little fractures all around the pipe, that the crack smoke/vapor can escape from while hitting it... I have had this happen, and it is shitty! So to anyone about to start smoking crack, just don't! but if you must, please use a real crack pipe when you do.. and anyone using anything but brillo as a filter, you have no idea what u r missing, by not using copper brill chore boy.. it works wayyy better than all that other shit.. I have tried it all!! The only other thing that works, is those little mini wine/brandy/congac bottles, with either a small broken glass pipe in it like a bong, sticking out of the side, with brillo in it, if you have a traditional crack pipe, that keeps breaking and turns to a 2 inch special burning the shit outta your lips, this is a good way to salvage it, stick it the side of a tiny brandy bottle, like a home made weed bong, sort of..