Well that would defeat the purpose of the oil in the first place, which is
squirted into the tool to lubricate the air motor. Perhaps you're referring
to the high speed air turbine tools? Either way unless you already have the
compressor as I did, an electric tool is far cheaper and is not tethered to
a big heavy noisy piece of equipment.
They all need a little oil, but most people tend to over-do it and
it gets a bit messy. Only needs a drop or two a day, for light duty.
(Or they forget to oil them, and the tool dies a quick death.)
You can install an inline mist oiler on your workbench outlet that
you use the air tools at. But then you have to be REALLY careful not
to mix your hoses used with oiled air with your 'clean' hoses, or
you'll go to paint something and wreck a paint job getting oil
(residue from inside the hoses) into the paint.
For a proper compressor: Big, yes. Noisy, not really, if you buy a
proper belt-drive unit where the compressor is turning under 800 RPM
or so. The little 3450 RPM direct drive pancake compressors are not
enough to run a die grinder for any usable duty time, they make more
noise than they do air.
I have the "5 HP" (really a 4, but it's enough) Husky (Campbell
Hausfeld) 2-stage 80 gallon, and it's not noisy at all when running.
The fancier compressors from Ingersoll-Rand and Quincy are even
quieter and will run practically forever (even if used a lot), but you
pay a heck of a premium for a few Db's.
And I have the lumber and a solid-core door to build a little closet
around the unit, that will make it virtually silent - just need a
small vent fan before I start enclosing it, so it doesn't cook itself
if run for long periods...
Don't forget to put an outlet under the eaves or on the backside of
a framed "chimney", so the roofers have a convenient place to plug in.
Did you ever notice that you can get nice recessed "wall hydrants" for
water faucets outdoors, but nobody makes them for air?
Or a flush plate-mountable air QD fitting that would look good
inside a house? I'm just going to put the air-line drop in the
front closet, and paint the pipe when I'm done.
--<< Bruce >>--
Because air doesn't freeze, break pipes, and otherwise cause a huge
Making the roofer's job easy isn't my intent and I certainly don't
want to climb up on the roof to install/service an air connection
that I'll never use. OTOH, we're thinking about building a house.
If we end up going that way, I was considering an air connection
inside every closet (hidden, but accessible). Running the lines in
open walls is easy enough.
I don't think they have to look all that good of you just tuck them
in closets alongside the door opening. No one will see them there so
they don't even need to be painted. I have one in an outside closet
(outside the front door, where the entrance panel is), just because
it was a convenient place to run a line from the basement to the
The big and heavy I would agree with for any compressor
adequate to drive a die grinder, but *noisy*? It may be that you have
the wrong air compressor. The oilless ones tend to be *very* noisy, but
the oil wetted ones, with a belt drive from the motor to the compressor
tends to be very quiet in comparison. Yes, there are bursts of chugging
from time to time, but no problem from my point of view at least. I
would not have one of the oilless ones in my shop.
As for heavy -- I just installed a reel fed hose on the ceiling
to allow me to reach any place in the shop where I am likely to need
air. Someday, I will probably plumb it for drops near each likely place
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Ah crap, I didn't notice the crossposting until now, I won't keep this
thread going beyond this, I thought I was only replying to
sci.electronics.repair which is something that rarely requires air.
I do have an oiled belt drive reciprocating compressor, it's a LOT quieter
than the oilless junk but it's still quite loud. Part of the problem is
where it sits in the corner, the sound is amplified and echos.
Not to sound trollish, but one of my pet peeves is the lack of compressed
air capability in electronics (and formerly computer) repair shops;
cleanliness is next to godliness in equipment maintenance and for shops
not to at least use compressed air to clean dirty customer gear is to me
unconscionable (when needed I would expect hot high-pressure non-ionic
detergent cleaning as well).
Our regional Tektronix repair depot _routinely_ hot-washed and baked
instruments that were brought in for repair.
I do it all the time, never had an issue with it. One thing I have learned
though is to stay away from optical drives with the air, more than once I've
stirred up dust which settled in and ruined the optics.
I've handled CMOS devices with bare hands/no straps too, but the
plural of anecdote isn't data. The fact is that moving air will get
a charge. If the conditions are right you can zap something.
The other problem with the high pressure/volume of a shop compressor
is physical damage. Unless you're a pig, such things shouldn't be
I suppose you've never heard of a special nozzle made for
electronics. It has a radioactive isotope to prevent static problems.
Microdyne leased two of them for the production floor, because the
manufacturer didn't sell them.
Central Florida isn't a desert, but I suppose you've never seen a
commercial air compressor with a dryer?
Service to my country? Been there, Done that, and I've got my DD214 to
I guess most of us have handled CMOS in this fashion, and I did so
myself until made aware that failure rates of such treated equipment
was much higher than good procedure.
As a test, I directly applied standard 5kv 1/50 impulses to 800 PIV
diodes, and found that it was simple to get measurable change in
characteristic, but usually took several applications to produce an
actually unuseable diode.
So the warning is there, that you may not stop the device from
working, but it may not be the same as when the manufacturer provided
it to you, and certainly I would safely guarantee that any change will
not be for an improvement..
| Gerald Miller wrote:
|> krw wrote:|> Static electricity and electronics don't mix, not to mention breaking|> things. Using a compressor to blow out computers may do more harm|> than good.
| Can't see as it would be worse than canned air
Much worse. What creates the static electricity is the
relatively long path of the air using a compressor (length
of the hose and or pipe). Canned air is very short,
and static electricity has hardly any time to be
generated. _____________________________________Gerard S.
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