I make different sizes and directional bends in my carb spray straws. I heat one end with a lighter about half an inch from the end, just heat a little and then stretch it until it gets real thin, then blow on it 2 cool and harden, cut the part you melted and stretched with something sharp (razor blade) in the middle of the stretch. Then you can make it curved if you want by barely heating the stretched tip you cut at the end until it starts 2 droop( blow on it 2 harden). I usually have a couple, a straight one with a fine tip, curved with a fine tip for tight places like the jets in the carbs venturi. This makes a can last a lot longer and really help me clean or make sure the jets in the venturi are clear. Hopefully this gibberish makes some sense, if you heat it 2 much the straw will collapse.
