The “crack” method heats the product by convection – a stream of hot air passes through and around the product. Convection methods include the “machine”, the GVG, and bongs.

The “meth” method heats the product by conduction – a hot surface conducts heat directly to the product. Conduction methods include light bulbs, test tubes, aluminum foil.

Any method that heats by conduction is likely to burn/carmelize/pyrolize the DMT before appreciable amounts of vapor are formed. The resultant vapor will be less potent and very harsh.

DMT is best heated by convection. When DMT is heated by convection it vaporizes very quickly –before it has a chance to burn.