Quote:
Originally Posted by airamp
It is more friendly to the environment than the emissions of a high powered compressor by far.
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AH, but... The CO2 used in these applications is created, rather than extracted from the atmosphere (not enough there to be viable). So that aspect differs very little from burning fossil fuels... And so on, and so on :D
Veering dangerously close back to being on-topic, there's a thread in the tutorials section on using scuba tanks (with a few addenda on using paintball air cylinders - mine's ally rather than CF).
http://www.engravingforum.com/showthread.php?t=614