Great post! The only thing I might reconsider is your air drying method. It may be perfectly fine, but I would hate to risk a 4K spindle. Hankinson (sp) makes a solid air dryer that won’t break the bank. We buy ours from McMaster carr or Grainger cant remember… You wouldn’t need a large one if your only trying to run the spindle head. I work on Medical equipment where clean dry air is a must, and any water in the system will wreck your world. The hank’s keep everything dry and I would guess you could get one for under a grand if you not buying from the guys I mentioned earlier.
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