I got a similar question though instead of Butane i used Acetone. I put leaves, some bud and stems in to a glass container, filled it with acetone enough to cover everything, let it sit for a day now i was goin to pour it out into another jar through a coffee filter then heat it up [but not really hot or open flame since its flammable] to evaporate the acetone quicker leaving me with some nice sticky hash....this is correct right in my steps?