I recently bought a "Micro die grinder" from HF:
http://www.harborfreight.com/cpi/cta...emnumber=47869

For $9.99, what the hell! I just used it and it's really nice for
delicate work, where its super light weight makes it very easy to handle.

But, the purpose of this post is to ask about the oiler that came with it:
http://home.comcast.net/~bobengelhardt/oiler.jpg
At least, I assume that it's an oiler. I put oil in it and the oil went
into the grinder. Boy, did it ever - into & out of and all over my
hands! So what's the trick to using these things? Do they have to be
oriented a certain way? The included instructions did not even mention
the device.

Thanks,
Bob

Bob Engelhardt wrote:
I recently bought a "Micro die grinder" from HF:
http://www.harborfreight.com/cpi/cta...emnumber=47869

For $9.99, what the hell! I just used it and it's really nice for
delicate work, where its super light weight makes it very easy to handle.

But, the purpose of this post is to ask about the oiler that came with
it:
http://home.comcast.net/~bobengelhardt/oiler.jpg
At least, I assume that it's an oiler. I put oil in it and the oil
went into the grinder. Boy, did it ever - into & out of and all over
my hands! So what's the trick to using these things? Do they have to
be oriented a certain way? The included instructions did not even
mention the device.

Thanks,
Bob
I have one that looks just like that. I feed it oil down the air line at
the start and end of a session and it seems fine so far after about 6
years occasional use. I don't use it for extended use, maybe 5 minutes
at a time. I have some of the in line oilers as you have shown but
haven't gotten around to fitting them yet. I have a nice set of 10
assorted 1/8" carbide burrs that I use with it almost exclusively and
they are great except for the fine slivers you sometimes get in your
fingers.

On Jan 23, 4:04*pm, Bob Engelhardt wrote:
I recently bought a "Micro die grinder" from HF:http://www.harborfreight.com/cpi/cta...emnumber=47869

For $9.99, what the hell! *I just used it and it's really nice for
delicate work, where its super light weight makes it very easy to handle.

But, the purpose of this post is to ask about the oiler that came with it:http://home.comcast.net/~bobengelhardt/oiler.jpg
At least, I assume that it's an oiler. *I put oil in it and the oil went
into the grinder. *Boy, did it ever - into & out of and all over my
hands! *So what's the trick to using these things? *Do they have to be
oriented a certain way? *The included instructions did not even mention
the device.

Thanks,
Bob

I've got a number of these grinders, I just leave them set up and
change grinders when I want to change points. There're several types
of these oilers, the ones I have have molded arrows on them to show
air flow. Lately, I just squirt a few drops of oil in the hoses
before using them. These die grinders use vane motors, the moisture
in the air provides a certain amount of "lubrication". Too much oil
leaves a lot of mess, as you've found.

Stan

On Jan 23, 3:04 pm, Bob Engelhardt wrote:
I recently bought a "Micro die grinder" from HF:http://www.harborfreight.com/cpi/cta...emnumber=47869

For $9.99, what the hell! I just used it and it's really nice for
delicate work, where its super light weight makes it very easy to handle.

But, the purpose of this post is to ask about the oiler that came with it:http://home.comcast.net/~bobengelhardt/oiler.jpg
At least, I assume that it's an oiler. I put oil in it and the oil went
into the grinder. Boy, did it ever - into & out of and all over my
hands! So what's the trick to using these things? Do they have to be
oriented a certain way? The included instructions did not even mention
the device.

Thanks,
Bob

Bob,
I have four or five, and of course I took the oiler apart to see how
it works. It's just a pinhole. Air pressure enters the chamber, and
when air pressure falls, it pushes oil into the air line.
I suspect you have fluctuating air pressure.
I would just oil the hose (as others have said).

I have one that I use as a lathe tool post grinder (bushed to fit a
boring bar holder). I changed out the load carrying bearings (2ea.)
to grade 5, available from McMaster Carr for about $7. Now, it's
about .0005" slop. I did not change the far end of the air motor
bearing. Just my luck, the grinder I chose to upgrade had a VERY loose
collet holder. I had to grind it true, then put a brass ring on the
tail of the collet. On some others, I had to champher the back end of
the collet, to keep them from sticking.
Dave

"Bob Engelhardt" wrote in message
...
I recently bought a "Micro die grinder" from HF:
http://www.harborfreight.com/cpi/cta...emnumber=47869


Toss the oiler in the trash and just put a couple drops into the quick
disconnect before you use it. I have some air tools that 30 years old that
all the oil they saw was a couple drops in the QD once in a while and they
are still going strong.
Greg

Mechanical Magic wrote:
...how it works. It's just a pinhole. Air pressure enters the chamber, and
when air pressure falls, it pushes oil into the air line. ...

OK, that explains it: if the pinhole is down (immersed in oil), then
mucho oil will be pushed into the line.

I would just oil the hose (as others have said). ...

It does seem to be the unanimous view & I'll go with it.

Thanks to all,
Bob

On Wed, 23 Jan 2008 18:04:51 -0500, Bob Engelhardt
wrote:

I recently bought a "Micro die grinder" from HF:
http://www.harborfreight.com/cpi/cta...emnumber=47869

For $9.99, what the hell! I just used it and it's really nice for
delicate work, where its super light weight makes it very easy to handle.

But, the purpose of this post is to ask about the oiler that came with it:
http://home.comcast.net/~bobengelhardt/oiler.jpg
At least, I assume that it's an oiler. I put oil in it and the oil went
into the grinder. Boy, did it ever - into & out of and all over my
hands! So what's the trick to using these things? Do they have to be
oriented a certain way? The included instructions did not even mention
the device.

Thanks,
Bob

Turn down the drip adjustment to about 1 drip every minute or two.

Use DTE Lite spindle oil.

Gunner