Both the Pax 2 and Pax 3 are designed to work with flower material. Here are a few tips to maximize your vaping experience. Make sure the desired contents are finely ground, and pack them into the device. Do not pack the chamber full to the brim. Instead, allow it to lightly reach the top of the heating chamber, then press the material down gently, so there is a small space left at the top. This will allow the flower to receive even exposure to heat, vaporizing the contents efficiently.