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Sounds like lots of good comments on what air compressors to use.  I can tell
you what NOT to use....

1)  I bought a Sears Craftsman 1.5 HP 12 gallon compressor.  It works great
with my rivet gun.  It is WAY too small for the die grinder I just bought.  
This is one of those tiny (smaller than a Dremel) 90 degree die grinders.  
The compressor can only maintain about 40 psi flat out.  Fortunately, I don't
use it that often.  I was astounded that this tiny tool overwhelmed the
compressor.

2)  Steve Colwell's suggestion to vacuum while you make the dust is a great
one, but I only have two hands and I find I need both to handle the Dremel
with high accuracy.  (What can I say?  Steve is obviously more talented than
I...)  However, I have occasionally used a 1.5 inch drum sander attachment on
my electric drill, particularly when grinding great gobs of flox to
custom-bed the lip of my header tank.  This device makes so much dust that
you need a second person holding the vacuum hose.  I also made this much dust
with my die grinder knocking down the excess hysol after closing my wings.  
For this, I put the wings outside on a folding table and let the dust fly!  

3)  AN IMPORTANT SAFETY TIP for contact lens wearers.  I have visited the
emergency room three or four times in the last three years due to tiny
particles of sanding dust in my eye.  Usually it gets on my upper eyelid and
my eyeball is protected by my contact lens and doesn't hurt until I take off
the lens.  Once it got under my contact lens and scribed a nice little
semicircle in my cornea.  Now, whenever I have a substantial amount of
grinding (and anytime I use the cutoff wheel in my Dremel) I remove my
contact lenses.  The problem is substantially diminished.

Of course, I put on my glasses instead.  If not, I'd probably find that I
just Dremeled off the bumper of my car!

BTW, going to the hospital only cost money the first time.  Now, my wife is a
Nurse Practitioner in the ER and takes care of me when this happens.  
However, last time she decided I needed a tetanus shot while I was there
(ouch!), so it ain't exactly free treatment!  (Next time it will probably be
smallpox...)

Be safe.

- Rob Wolf

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Please send your photos and drawings to marvkaye@olsusa.com.
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