This question and variations of this question have been posted several times on CR4. You should b e able to find and review the responses to the previous questions.
In the upper right corner, there is a "Search this forum" box and a "Search all of CR4" box. Enter "compressed air" or Compressed air usage", and you should get a bunch of postings and replies.
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Eventually, one needs to realize that it is far less important to be the smartest person in the room than it is to sit next to that person and make friends.
compressed
Re: compressed
