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I purchased an oil-free, beltless,Craftsman 6.5 HP compressor when I started
my project a couple years ago.  It has been, by far, the largest mistake of
my tool purchases.  It works fine, has a 60 gallon upright tank which takes
up very little shop space.  I have sandblasted parts with it including the
entire front framework & engine compartment of my just completed '69
Chevelle SS.  So what gives? NOISE!!  I could have never imagined an air
compressor could be so loud. It is behind an insulated wall separating my
work shop from the storage area of my garage.  I can not carry on a
conversation on the other side of this insulated wall when the compressor is
running.
   My entire career has been in the mechanical field so I have had exposure
to shop compressors forever.  I was the project manager for the restoration
and relocation of a Lockheed T-33 at our local airport.  During that project
we used a  hanger owned by the local high school for the prep & painting
process.  They had a new 5HP 2 stage belt drive compressor that was so quiet
we could hold a normal conversation 10 feet away from it.  I have often
wondered how many people purchase a shop air compressor, like I did, based
on price and not on total function and features.   Until I got stuck with
this noise pollution device, I would have never done any serious research on
air compressors.
  Hope my experience helps someone else avoid this pitfall.

Tom Sullivan
The Yuper (U.P. of Mi.)

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