If anyone decides to use the butane extraction method (a tube packed tight with cannabis, screens on the bottom end, with a cap that has an injection hole on top to receive the nozzle from cans of butane) DO NOT USE PVC PIPES (there are some internet plans for THC extractors made of PVC).
Butane breaks down PVC which leaches toxins/carcinogens into the hash oil (honey oil).
Not sure if hexane or the other "ane" suffixed chemicals are caustic to PVC, but butane most definitely is.
*Not saying you're going to do it this way, just a heads up to any who are currently using PVC and butane to extract THC, or those who are thinking about it.
*Use steel pipes instead!*