Extracting the essence of the plant, no matter what the technique, is our goal. Every solvent based method has its downside such as contaminate residue in the oil, burnt matter in the oil due to long, slow, cooking ( such as in olive oil, etc ). Now I'm not saying these are not all useful, but I thought there had to be a better way. that led me to consider essential oils. How are they extracted. They have to be as pure as possible. So I looked into what processes they use, and it comes down to three. Two are CO2 based and one uses steam. The CO2 processes are expensive, requiring expensive equipment, out of the reach of the average person. That leaves steam. The equipment is reasonable in price and the process is simple and easy. I will be making my first oil using the olive oil solvent method, just because of economics, and its has no chemical residues to worry about. But When my grow experience and volume are at a point to justify the expense, I'm going to try the steam extraction. I'm posting a link to the equipment, and if anyone here jumps on this idea and tries it, I'd love to see a post on it.
http://www.floragenics.com/homeGrown.htm
http://www.floragenics.com/homeGrown.htm