12-21-2009, 09:30 PM
They still may be useful for cleaning out gearboxes and such when doing major locomotive overhaul. I think they are actually liquid CO2 in the cans rather than compressed air. If you turn them upside down and spray, liquid comes out that almost instantly vaporizes (and is extremely cold).
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Kevin
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Kevin
Check out my Shapeways creations!
3-d printed items in HO/HOn3 and more!
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