I know this is a little bit off topic, but oil was mentioned earlier in this thread. This is an extremely dangerous process and PVC should not be used. PVC rates a C on chemical compatibility with butane. There is a chance of the pvc leaching toxins, butane is corrosive. Only pure 5x or more N-butane should be used, colibri etc. Use glass or stainless steel, and do it outside. Be safe and please do your research.
I do not personally like honey oil due to the process. There are a lot of variables that can be overlooked that could have negative effects on the final product. Ice, water, or bubble hash is the cleanest way to go imho.

Sorry to get off topic, just looking out for safety.