Hey there yahtzee umm ok how I clean my volcano.....Go to the store if u dont have 95-99% isopropanol alcohol. Ok then you take apart your volcano heres a link to the instructions:
http://www.storz-bickel.com/pics/down/quickstart.pdf

After that take all rubber and set aside, then soak your metal volcano parts in the alcohol about 5mins usually, a plastic bristle brush comes in handy for cleaning with the alcohol. Then thouroghly rinse with warm-hot water, let dry and voila clean volcano.

Use abit of alcohol around where your filling chamber unscrews can get kinda rezzed up makes it very hard to unscrew, take the screen out use ure thumb to unscrew.

Thats how i do it hope this helps....