When i made some shatter like IPA extract(hard rock shatter like when cold or not too warm room temp, but the second you touch it, it sticks to your fingers as oily stuff) i used to mix it with either tobacco or weed and smoke from a bong the regular way. I basically treated it like hash. Sometimes also smoked from joints, because at the time i was sick and my lungs could not handle bong. It was quite a bit of a waste from joint compared to bong, but everything is..