Well... if you used a candle, then the smoke you got (and the black residue) wasnt from the spoon, but from the candles incomplete combustion. In fact, putting anything (even a bar of the most heat resistent substance) over a candle will produce smoke (try it) which shows the smoke is coming from the flame itself, and not from the thing being heated.

Also, even if the temperature in the flame reaches thousands of degrees, it is still almost impossible to melt a metal spoon only with a candles flame, cause the heat gets distributed over all the spoon and it lowers the "reachable" temperature. I think (but never tried it) one couldnt melt even lead (which has one of the lowest melting points) by just putting it on a spoon and heating it with a flame.

I think the only danger is when one uses aluminium foil. It is very thin so it can reach high temperatures without much heating, and it also burns, which produces very high temperatures and possibly causes the production of aluminium vapour, which is very harmful.

When the aluminum foil burns, it gets momentarily red hot then it shrinks, gets coarse and loses its shine. If anyone use aluminium foil and notice that after smoking the aluminium foil got this way, it means one inhaled harmful substances.

But if one is careful and not heat the aluminium foil too much, but only enough to vaporize the hash oil, without letting the aluminum burn, and after smoking the aluminium foil remains smooth, shiny and without any shrinking, then i think there is no danger, cause the aluminium wasnt burnt and so no harmful vapours were released.

And i smoke hash oil much like the OP described, with aluminium foil and a bic lighter (instead a candle, exactly because of the candles smoke). When i was unexperienced, i accidentally heated the aluminium foil too much, and inhaled the smoke from burnt aluminium. It is easily noticed, as it tastes very different from hash oil, and burns the throat a lot more. Since then ive been much more careful and only heated the aluminium enough to vaporize the hash oil, and never got the awful smoke of burnt aluminium again. As it is pretty noticeable, im pretty sure i never inhaled burnt aluminium smoke anymore, and so im convinced it isnt a harmful way of smoking hash oil, if it were done carefully.
Coelho Reviewed by Coelho on . THC extract Heyy guys Dnt know if anyone has posted this, Sorry if someone did. Got this off THC extraction from Marijuana "If you ever had to think twice about lighting up a joint for fear of someone smelling it. If you were ever forced to blow the smoke out a window and pray you don't reek of weed. If you ever had to sneak around and couldn't enjoy a good buzz..." Easy THC Extraction © 1995 Axis Innovations Rating: 5