wondering about butane properties and thought of doing it like iso but with butane in it's liquid state. So everything would be in a pressurized container. I don't like the way the butane boils... and thought of keeping it liquid. Also.. when it's below 0 is butane a vapour or liquid? because it only boils when it's hotter than that. But I think it's a vapour.. so you couldn't use butane like iso just by having it in the freezer. So to do this it'd have to be pressurized. Haven't tried butane yet.. just looking into it. And wondering about how to make it pressurized. Thought of a bike pump. But what type of container could you use.. It would be clear so you could see what's going on. Not too crazy about using glass and pressure. It would be kind of small maybe can hold 500ml. Any ideas?