To test,

loosen the ring on the mason jar
Press the butane bottle into the valve for about a minute.
quickly tighten the ring on the mason jar and then plug the injection port.

Liquid butane will pour into the expansion chamber. Let it drip through, sniffing and listening for leaks at the various joints. Go around and tighten hose clamps and fittings until all leaks seem to have gone away. There might always be a hint of smell, but the important thing is that you can hold pressure.

Once you are satisifed with the integrity of your system, removed the mixing bowl from under the expansion chamber. Mark the butane level on the side of the mason jar.

Rinse the mixing bowl with warm water and fill with a couple cups of 100f water.

Slowly immerse the expansion chamber in the warm water. The butane will begin boiling. Soon you should see a drip from the extraction chamber side tubing. Let the process work for an hour or so, checking that you have enough heat to keep the evaporation/condensation cycle going. The test is complete when you can stop the boiling with icy water, wait 15 minutes, and have close to the same volume of liquid butane reappear in the mason jar.

For live exercises, fill the extraction chamber with up to 100g of the donor substance of your choice, to within about an inch of the top. Tamp it in lightly if you need to. Let the process run as long as you'd like to.

When you're done, you have your extracted goodness and the butane sitting in the bottom of the mason jar. You can remove the jar from its lid and cap it for security uintil you can release the butane.

If you want to reuse the butane, I have some modifications to this simple design that will let you recover most of it for next time.

Enjoy!
rodekyll Reviewed by rodekyll on . Butane Extraction Method? So I've been reading a few posts in this foram about butane extarction method people are using to extract pure THC from there buds. To be honest, this is a first for me. I've only used cold extractions methods using 190pf alcohol for use as a tincture. I'd like to know more about the butane method; in depth and in detail if anyone would mind taking the time to share. What exatctly is needed? Amount of weed? Brand name Butane? Lenth of proceddure? Amount of Butane per bud? Rating: 5