I used Nitrogen for years with a small blasting cabinet and I loved
it. It is absolutely dry, incredibly quiet, and has more pressure
than a compressor can deliver. It was not that expensive for a SMALL
cabinet. It was perfect.
So I got a bigger cabinet, in addition to the small one, and bought
a compressor. No matter how you try to muffle it, it is noisy. You
also need an inline air dryer (that requires some maintenance) and
you have to drain water from your tank periodically, or your media
clumps. I just realized when I read this thread that I stopped using
the blasting cabinet as much as I used to. The "sssssssss" of the
compressed Nitrogen was soothing. The compressor is irritating.
If you are using a small blasting cabinet, and you don't already
have a compressor, a nitrogen tank may be an excellent way to add
compressed air. When you factor in the cost of a compressor and air
dryer, nitrogen may not be that much more expensive. It certainly is
easier on the ears.
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