Do you REALLY need to take the butane canister off of a Iwatani torch?

Joined Apr 6, 2011
I just got an Iwatani Torch. I can already tell this is an amazing, professional quality piece of equipment. I got it for searing sous vide meats, so I will probably use it at least once a week. It says to release the butane canister from the torch when you are done using it for the day. Do I really need to do that, or are they being too cautious? Does anyone out there leave the butane canisters connected?
Joined Apr 3, 2010
I would heed manufacturers directions. After all who knows better then them, they invented it.

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