Cold/chill gun?

Have you felt the air coming out of your air compressor nozzle? When a gas (in this case air) expands it cools (basic thermodynamics). Simply venting compressed air to atmosphere does this. Controlling how much and how fast is totally up to how much money you want to spend and what you are capable of rigging up yourself vs an off the shelf “contraption”. And as I recall you are pretty good and devising and rigging up your own solutions.

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Ummm… totally depends on what you drink. There are some hard liquors that have a very high alcohol content. As for “meth” you better stay away from the drag strip where cars are running on methanol & nitromethane.