There doesn't seem to be an appropriate forum for this issue, so I'll post it here where there are already similar discussions. I'm interested in discussing solvent extraction. My hunch is that solvent extraction is more thorough than making bubble hash, because I suspect there's still THC left in the herb after the trichromes are removed. I don't know this for sure, it's just a hunch. There is an excellent book on the subject, published back in the '60s or '70s, and I've had my copy ever since then. It's called 'Cannabis Alchemy': Cannabis Alchemy: The Art of Modern ... - Google Book Search You can read the essential information online. Google lets you read the first dozen or so pages of a book, which is the whole meat of this one. A chemist who has read this book tells me that boiling herb in a solvent will alter the chemical structure of some of the THC, and recommends instead that the material be very finely pulverized and soaked for a couple days. He also says to use only lab grade ethanol (what's in liquor, and this is 100% ultra pure) for the first stage extraction. The other alcohols have varying degrees of toxicity, methanol in particular being deadly poison. I shouldn't think it would matter if you do the second stage with pet ether, which takes the THC out of the alcohol, but that's what he says. I need to query him further on this, as the cost of lab grade ethanol is beyond my means. Anyway, I found a two-ring hotplate at wal-farts for $30 and a galvanized steel tub at the hardware store for about $20. I could probably have gotten both these items at garage sales or thrift stores for much less, but I'm too impatient to spend days shopping around. Now I need to find the rest of the parts, and acquire a quantity of mids or homegrown shake. My guess is that this setup is only big enough to process about a qp at a time. I'll be very interested to hear from anyone else who has done it this way.