Woodworking Online

[Bill Gooch]

My good wife has agreed, in fact is insisting, that Santa bring me a decent
dust collection system for my lathe this year. I use a canister mask most
of the time but there is still dust in the air when I take the thing off.
At the Ottawa wood show this past week I looked at the King and Jet
equipment with the canvas bag on top and plastic bag below being fed by a
hood which is adjustable to the height of my lathe. Problem I'm having
after doing a newsgroup search is the conflicting opinion on what should be
the optimal choice -- low micron (I gather less than 1 is good) or higher
HP. All I want the thing to do is look after my lathe. What's the best
solution? Tried a furnace squirrel cage and some filter, not really very
good. Any suggestions appreciated.
thanks.


--
Bill

[George]

Why not
http://www.wmhtoolgroup.com/index.cfm?area=shop&action=detail&iid=11785

I've got its Delta brother, and it's a vacuum, dust collector, and all-over
the shop roller. The finer filtration stuff is good, especially when you
can't get any distance between you and the bag.

Got my pickup behind and below the lathe bed, and it works really well.

"Bill Gooch" <wgooch@sympatico.ca> wrote in message
news:OTKqd.11227$Ad3.605935@news20.bellglobal.com...

[Dr. Deb]

Bill Gooch wrote:

[Leo Van Der Loo]

Hi Bill
Biggest problem is the filters don't take out the smallest stuff and the
fan keeps the dust from settling down, (the big pieces you can grab
between your teeth and spit out<G>) The best answer in my opinion is a
personal dust filter and to keep it on until you leave the shop.

Have fun and take care
Leo Van Der Loo

Bill Gooch wrote:

[Ecnerwal]

In article <JsOdnQa1QexmWjbcRVn-tQ@rogers.com>,
Leo Van Der Loo <l.vanderloo@rogers.com> wrote:

[Leo Van Der Loo]

Hi there

Someone decided that if its smaller than 5 microns its ok, why? can't
shut down industry? some reports indicate that the smaller stuff is
unhealthy, but I'm not going into that, when you generate dust and not
get all of it, it just there for you to suck up, even if you eventually
get the dust down to 5 microns

Have fun and take care
Leo Van Der Loo

Ecnerwal wrote:

[Ecnerwal]

In article <AeGdnaL2ZbPOSDbcRVn-vg@rogers.com>,
Leo Van Der Loo <l.vanderloo@rogers.com> wrote:

[Leo Van Der Loo]

Ecnerwal I was not trying to say that what you said was wrong, what I
was trying to say is that before the dust collector gets all the dust
the person is sucking in the dust all the time, and therefore it would
be better to use a personal filter, that's the way I see it, and the
size of the particles is arbitrary, .5 micron dust inhaled is still bad
in the long run.
Have fun and take care
Leo Van Der Loo


Ecnerwal wrote:

[J. Clarke]

Leo Van Der Loo wrote:

[Leo Van Der Loo]

Hi John

It's not so much as how much more the filter will take out, but the time
you are inhaling the dust if you don't have a mask on, in other words,
if it takes your dust filter to clean the air in your shop 20 min lets
say, and you make some more dust in those 20 min and again etc., you
will be breathing dust at all times, while if you wear a dust mask you
would not inhale anything more than the filter lets through.

J. Clarke wrote:

[George]

Well, the physiology is pretty straightforward. The mucus in your nose and
on your nose hairs, lining your nasopharnyx and trachea/bronchi, will catch
and hold any size particle. Period. Your body also tries to move it along
through the regular elimination channels, as you can see on Kleenex the
morning after touching up that walnut that just needed a bit, where you
didn't care to get the mask. The "evidence" for the dangers of wood dust
is derivative. Inorganic particles like asbestos and so forth produce
lesions in the nasopharnyx and lungs, though it seems increased risk of
cancer is barely significant unless the individual is also a smoker. Which
is probably the major part of what the real danger is for woodworkers - the
natural insecticides and fungicides in wood can cause chemical damage - so
can smoking. As the derivative "studies" did not control for exposure to
other chemicals by woodworkers, nor for other factors, they're not of much
precise value.

The science of filters is also pretty straightforward. There's mesh
trapping, which is pretty easy to imagine - it's running sand through a
sieve. Consider what happens when you get some larger particles on the
sieve - finer and finer are trapped, at the expense of flow, until the sieve
clogs. Then there's the settling effect, where air has so many passages to
the outside that the pressure in any one is so low as to allow smaller
particles to settle. The felt types and folded papers work mostly on this
principle. Electrostatic types you can hear about on late-night cable.

Both filtration varieties, however, will trap smaller particles if the dust
cake is not disturbed, so if you still have enough suction, leave things be.

Personally, I use collection when sanding, and a mask when I remember. Also
ear defenders to keep the sound of the collector out of my ears.

"Leo Van Der Loo" <l.vanderloo@rogers.com> wrote in message
news:OuudnSy0Y4amtjHcRVn-pg@rogers.com...

[RonB]

I'll comment on a more basic problem than microns.

I am a fairly new turner but the biggest problem I have with 'lathe-debris'
is containing it, as well as breathing it. I use a face shield all of the
time and a paint mask with certain woods.

I recently moved my lathe from a center floor position to against the wall
and quickly discovered that cleanup was much easier. About 1/3 of the
shavings hit the wall and pile up on the floor at my feet, rather than all
over the place. I am going to put a simple sweep-port near the bottom of
the machine to catch some of the shavings as they fall and take care of
others by sweeping them into the port.

[mac davis]

On Mon, 29 Nov 2004 23:30:44 -0500, Leo Van Der Loo
<l.vanderloo@rogers.com> wrote:
Leo.. It sounds to me that the best bet is a good DC and a personal
filter would be the way to go...
My problem is that I'm just not willing to wear a mask, though I know
that I should...
(I should also quit smoking, drinking, red meat and lose weight but it
would be a bitch to be in the hospital dying of nothing)
The best bet for me at the time is to leave the garage door open and
have the DC and air filter on...

[George]

Yep. I keep one of those auto expanded 66-gal leaf bags in front of the
lathe. When turning outside properly, the shavings follow the call of
gravity down into the bag, or, with slightly different cutting angles, run
down the flute of the gouge into huge tangled messes on top of my steadying
hand. I periodically move it six inches left, tip, and let gravity take
hold.

When turning inside, the shavings that fall are carried by the piece until
they eject aft against the nearby wall, or run down the flute and are
dropped into the bag as before. NB: watch where the end of the gouge is when
you remove it from the piece, and never run your hand over the nose to
remove shavings jammed in a bowl gouge flute. DAMHIKT

Since I turn out of the throw zone, nothing comes up at me, so no shield.

"RonB" <rbrogan@cox.net> wrote in message
news:2Q%qd.79512$EZ.29277@okepread07...

[George Tanty]

Bill,

I would also suggest you look at the JDS portable that I got at
Woodcraft. It's got the felt bag on top to remove the nasty small
stuff. Don't have the model number available right now but I'm very
pleased with my choice and does a great job. Only problem is cleaning
the felt bag from time to time but I think that would be true with any
of the collectors.

Regards

George L. Tanty
Santa Fe, NM