OK here is one of those dumb questions we all need to throw , otherwise we won't learn :

How do you attach the canister to the stove ? Does it screw in ?
I have seen them in stores and didn't want to buy them because of the "high temp" factor.

So, if I buy a rocket stove and gas canister , does it screw in ?? And when I want to remove it for storage, do I just screw it out ? It will not leak gas when it is half used ?