Nowadays, there are dozens of vaporizer choices. From fancy tabletop versions to state-of-the-art portable models, smokers have a bevy of options. But back in the day, there were “hot knives.” It’s a simple-but-efficient DIY method for smoking hash, but with the rising popularity of dabs, works well for them too. Here’s a step by step tutorial for those unfamiliar with the old school technique.

(Photos: Aymann Ismail/ANIMALNewYork, Illustration: Nate Cepis)