Dust collection hose question

[Joe >]

I noticed some black flexible ribbed hose used in a dust collection accessories ad at http://www.rockler.com/product.cfm?page=11312&rrt=1 .

I tried some stuff that looks like it that is sold as drainage hose. It is similar to http://www.lowes.com/pd_259812-62059-51110_0__?productId=1239335&Ntt=corrugated+pipe+4+inch&pl=1&currentURL=%3FNtt%3Dcorrugated%2Bpipe%2B4%2Binch&facetInfo= or http://www.lowes.com/pd_24136-124-04510050H_0__?productId=3306084&Ntt=corrugated+pipe+4+inch&pl=1&currentURL=%3FNtt%3Dcorrugated%2Bpipe%2B4%2Binch&facetInfo= .

When used on a dust collector, the moving air across the ribs makes it sound like there's a steamboat whistle in the shop.

I've tried different lengths and flows to get away from the resonant frequency with no luck. It only changes pitch.

Has anyone had any luck with this stuff? The price on the clear stuff is outrageous and the wire makes it harder to work with. The black stuff curves easily and neither collapses nor shrinks under vacuum.

[Leon]

First off you should be using 6" diameter hose!


Past that you probably have a leak causing the whistle. I use the 6"
clear corrugated flexible hose, 30', witha 1100 CFM collector and have
no issue with the ribs causing a whistle.

[John Grossbohlin]

"Joe>" wrote in message news:G2DZt.56369$e97....@fx14.iad...

>I noticed some black flexible ribbed hose used in a dust collection
>accessories ad at http://www.rockler.com/product.cfm?page=11312&rrt=1 .

>I tried some stuff that looks like it that is sold as drainage hose. It is
>similar to
>http://www.lowes.com/pd_259812-62059-51110_0__?>productId=1239335&Ntt=corrugated+pipe+4+inch&pl=1&currentURL=%3FNtt%3Dcorrugated%2Bpipe%2B4%2Binch&facetInfo=
>or
> >http://www.lowes.com/pd_24136-124-04510050H_0__?productId=3306084&Ntt=corrugated+pipe+4+inch&pl=1&currentURL=%3FNtt%>3Dcorrugated%2Bpipe%2B4%2Binch&facetInfo=
>.

>When used on a dust collector, the moving air across the ribs makes it
>sound like there's a steamboat whistle in the shop.

Any chance you accidently have the variety with the weep slits? I imagine
they would make all kinds of sounds... ;~)

[SonomaProducts.com]

>
> Has anyone had any luck with this stuff? The price on the clear stuff is outrageous and the wire makes it harder to work with. The black stuff curves easily and neither collapses nor shrinks under vacuum.

Wow, very innovative. It seems that the ridges are quite a bit more pronounced than the flexible plastic. If you run is very long I think you will get quite a bit of friction loss. I think the whistling proves my point of turbulence, etc. I use rigid thin wall irrigation PVC and just use the flex at the very end where a machine needs some freedom to be moved or when sharing a single connection with multiple machines that needs to be detached and moved among them. Then you just need a few pieces of the expensive (but appropriate) flex.

The dust collection guru also says use the biggest pipe the farthest you can. My DC has a 6" inlet so I run 6" rigid right up to near the machine and break down to 4" rigid and finally flex.
http://www.sonomaproducts.com/images/stories/shop/7dust.jpg
http://www.sonomaproducts.com/images/stories/shop/91air.jpg
http://www.sonomaproducts.com/images/stories/shop/3back-wall.jpg

[dpb]

On 9/16/2013 2:14 PM, SonomaProducts.com wrote:
>
>>
>> Has anyone had any luck with this stuff? The price on the clear
>> stuff is outrageous and the wire makes it harder to work with. The

>> black stuffcurves easily and neither collapses nor shrinks under vacuum.

>
> Wow, very innovative. It seems that the ridges are quite a bit more
> pronounced than the flexible plastic. If you run is very long I
> think you will get quite a bit of friction loss. I think the
> whistling proves my point of turbulence, etc. I use rigid thin wall

> irrigation PVC andjust use the flex at the very end ...

Agree, the noise is friction losses--_a_bad_thing_ (tm)

I've been using thinwall DWV plastic (Sch 30 or even 20) and excepting
for the static electricity annoyance(*) works fine as well.

(*) But it's no worse than the flex plastic, either...

--

[Puckdropper at dot]

dpb <no...@non.net> wrote in news:l17qpg$el5$1...@speranza.aioe.org:

>
> Agree, the noise is friction losses--_a_bad_thing_ (tm)
>
> I've been using thinwall DWV plastic (Sch 30 or even 20) and excepting
> for the static electricity annoyance(*) works fine as well.
>
> (*) But it's no worse than the flex plastic, either...
>

I wrapped some wire around my planer discharge chute because of the
static. One end is grounded to the body of the planer. It helps quite a
bit.

Bill Pentz's site had a recommendation of putting a piece of metal tape
down the pipe on both inside and outside then connecting them with a
through bolt. Sounds like it worked well.

http://www.billpentz.com/woodworking/cyclone/ducting.cfm#static_electrici
ty

Puckdropper

--
Make it to fit, don't make it fit.

[Leon]

My hose is long enough that it is always in contact with the concrete
floor. That contact seems to take care of static discharge as I can't
remember ever being shocked by the hose. A different climate might have
different results.

[Meanie]

For long runs, I use the thick cardboard carpet tubes since they are
also 4" in diameter. I visited my local carpet store and they gave them
to me for free. They are 10 to 12ft in length and easy to cut. The
carpet store throws them away.

I connect the tubes with the dust collection elbows and other misc
connections required for each tool. The only flexible hose I use are for
my Router table and table saw because they are on wheels.

[Doug Winterburn]

I don't get shocked, but the hose sometimes starts to look like a chia pet.


--
"Socialism is a philosophy of failure,the creed of ignorance, and the
gospel of envy, its inherent virtue is the equal sharing of misery"
-Winston Churchill

[SonomaProducts.com]

> My hose is long enough that it is always in contact with the concrete
>
> floor. That contact seems to take care of static discharge as I can't
>
> remember ever being shocked by the hose. A different climate might have
>
> different results.

Stop bragging. My "hose" drags around on the floor also if I don't tie it too my leg. It's a bitch when I step on that sucker..

[SonomaProducts.com]

>
> I've been using thinwall DWV plastic (Sch 30 or even 20) and excepting
>
> for the static electricity annoyance(*) works fine as well.
>
>
>
> (*) But it's no worse than the flex plastic, either...
>
> --

Read Puckers reply about Bill Pentz idea of aluminum tape. I have it run inside and outside every run and fitting with a complete circuit from one end to the other. You can see it in my pics. I make sure the connecting screws pass through it as well. I connect a copper wire to it at the end with an alligator clip that can be attached to the machine. I haven' had even a hint of a shock, even in the places where the terminus has lost the clip or wire and just having the tape throughout causes enough diffusion it just never builds any static.

[dpb]

On 9/16/2013 5:38 PM, Leon wrote:
> On 9/16/2013 4:44 PM, Puckdropper wrote:
>> dpb <no...@non.net> wrote in news:l17qpg$el5$1...@speranza.aioe.org:
>>
>>>
>>> Agree, the noise is friction losses--_a_bad_thing_ (tm)
>>>
>>> I've been using thinwall DWV plastic (Sch 30 or even 20) and excepting
>>> for the static electricity annoyance(*) works fine as well.
>>>
>>> (*) But it's no worse than the flex plastic, either...
>>>
>>
>> I wrapped some wire around my planer discharge chute because of the
>> static. One end is grounded to the body of the planer. It helps quite a
>> bit.
>>
>> Bill Pentz's site had a recommendation of putting a piece of metal tape
>> down the pipe on both inside and outside then connecting them with a
>> through bolt. Sounds like it worked well.
>>

...

I've still got stuff in temporary places awaiting time enough to finish
pouring a slab and getting power to where I want the planer permanently
so haven't done anything regarding that. I figured in the end I'd just
run a piece of #10 or so fencing wire thru it and ground that and see
what happens...

> My hose is long enough that it is always in contact with the concrete
> floor. That contact seems to take care of static discharge as I can't
> remember ever being shocked by the hose. A different climate might have
> different results.

Indeed. If the RH ever gets to 30-40% here during summer days we're
complaining about the "high humidity". Normal would be in the '10s to
low 20s and in July/Aug not unusual at all to be in single digits. TN
and VA, otoh, if it dropped below 70-80% the natives complained about
how "dry" it was and chapped lips, etc., ... It's all in what one's
used to.

--

[dpb]

On 9/16/2013 5:44 PM, Meanie wrote:
...

> For long runs, I use the thick cardboard carpet tubes since they are
> also 4" in diameter. I visited my local carpet store and they gave them
> to me for free. They are 10 to 12ft in length and easy to cut. The
> carpet store throws them away.

...

Now that one _is_ clever!!!

--

[woodchucker]

On 9/16/2013 6:38 PM, Leon wrote:
> On 9/16/2013 4:44 PM, Puckdropper wrote:
>> dpb <no...@non.net> wrote in news:l17qpg$el5$1...@speranza.aioe.org:
>>
>>>
>>> Agree, the noise is friction losses--_a_bad_thing_ (tm)
>>>
>>> I've been using thinwall DWV plastic (Sch 30 or even 20) and excepting
>>> for the static electricity annoyance(*) works fine as well.
>>>
>>> (*) But it's no worse than the flex plastic, either...
>>>
>>
>> I wrapped some wire around my planer discharge chute because of the
>> static. One end is grounded to the body of the planer. It helps quite a
>> bit.
>>
>> Bill Pentz's site had a recommendation of putting a piece of metal tape
>> down the pipe on both inside and outside then connecting them with a
>> through bolt. Sounds like it worked well.
>>
>> http://www.billpentz.com/woodworking/cyclone/ducting.cfm#static_electrici
>> ty
>>
>> Puckdropper
>>
>
>
> My hose is long enough that it is always in contact with the concrete
> floor.

Braggit.

That contact seems to take care of static discharge as I can't
> remember ever being shocked by the hose. A different climate might have
> different results.

--
Jeff

[Martin Eastburn]

Dust is destined to be with metal. With plastic, a static charge is
developed and can cause explosions. Some run a bare copper wire down
the pipe and ground the wire to bleed off the charge.

Martin

[Mike Marlow]

Martin Eastburn wrote:

> Dust is destined to be with metal. With plastic, a static charge is
> developed and can cause explosions. Some run a bare copper wire down
> the pipe and ground the wire to bleed off the charge.
>

Oh no... here we go again...

--

-Mike-
mmarlo...@windstream.net

[-MIKE-]

On 9/16/13 8:44 PM, Martin Eastburn wrote:
> Dust is destined to be with metal. With plastic, a static charge is
> developed and can cause explosions.

BULLSHIT!

(here we go again!) :-)


--

-MIKE-

"Playing is not something I do at night, it's my function in life"
--Elvin Jones (1927-2004)
--
http://mikedrums.com
mi...@mikedrumsDOT.com
---remove "DOT" ^^^^ to reply

[Leon]

On 9/16/2013 8:44 PM, Martin Eastburn wrote:
> Dust is destined to be with metal. With plastic, a static charge is
> developed and can cause explosions. Some run a bare copper wire down
> the pipe and ground the wire to bleed off the charge.
>
> Martin

If that were true there would be you would hear about explosions all the
time.

[Joe >]

Local availability of parts and fittings and cost (and my knowledge) limited me to 4" instead of 6", but I've been pleased with the performance of my 2-run system on a Jet DC. As it expanded, and everything got hooked up and I added drops for future use, the number of blast gates near each tool increased, but that's about it.

I'd considered leaks but have been unable to find any in this hose and duct joints beyond that are sealed. I started trying to use it to add add a floor sweep on a flexible drop. Within seconds of turning the DC on, a sound like blowing across the top of a Coke bottle (remember those days? Doesn't work well with a can.) starts. It then gets louder and louder, reaching a maximum some 30 seconds (maybe) later. At the same time, the frequency increases. I don't have a dB meter, but it will reach 'Threshold of Pain' levels. Tried a bunch of different lengths using leftovers from a yard drain system I'd installed all the way up to a full roll in both 2(?) and 4 inch. Same thing, different pitch. FWIW, neither a 25 foot pool vac hose nor coupled ShopVac hoses do it.

At this point it became an experiment, and I even tried inserting various lengths between pieces of duct to see if breaking it up made a difference. No such luck.

I've got a lot of this stuff rolled up in the rafters and it would be nice to put it to use.
-J

On 9/16/2013 7:44 AM, Joe <Joe@Joe'sPlace.com wrote:
> I noticed some black flexible ribbed hose used in a dust collection accessories ad at http://www.rockler.com/product.cfm?page=11312&rrt=1 .
>
> I tried some stuff that looks like it that is sold as drainage hose. It is similar to http://www.lowes.com/pd_259812-62059-51110_0__?productId=1239335&Ntt=corrugated+pipe+4+inch&pl=1&currentURL=%3FNtt%3Dcorrugated%2Bpipe%2B4%2Binch&facetInfo= or http://www.lowes.com/pd_24136-124-04510050H_0__?productId=3306084&Ntt=corrugated+pipe+4+inch&pl=1&currentURL=%3FNtt%3Dcorrugated%2Bpipe%2B4%2Binch&facetInfo= .
>
> When used on a dust collector, the moving air across the ribs makes it sound like there's a steamboat whistle in the shop.
>
> I've tried different lengths and flows to get away from the resonant frequency with no luck. It only changes pitch.
>
> Has anyone had any luck with this stuff? The price on the clear stuff is outrageous and the wire makes it harder to work with. The black stuff curves easily and neither collapses nor shrinks under vacuum.
>
>

[Markem]

On Mon, 16 Sep 2013 21:05:31 -0500, -MIKE- <mi...@mikedrumsDOT.com>
wrote:

>On 9/16/13 8:44 PM, Martin Eastburn wrote:
>> Dust is destined to be with metal. With plastic, a static charge is
>> developed and can cause explosions.
>
>BULLSHIT!
>
>(here we go again!) :-)

It not BS, it could happen but it is not very likely, obtaining the
perfect mixture of very fine dust, oxiding agent and spark is all you
need but odds are not at all good that you acheive that bit of
perfection. Now it you mix in dry coffee creamer rather than sawdust
your chances of an explosion are much better. So do not vacum up a big
spill of coffee creamer with your dust collector if your hoses are not
grounded.

Mark

TIC

[-MIKE-]

On 9/17/13 10:45 AM, Markem wrote:
> On Mon, 16 Sep 2013 21:05:31 -0500, -MIKE- <mi...@mikedrumsDOT.com>
> wrote:
>
>> On 9/16/13 8:44 PM, Martin Eastburn wrote:
>>> Dust is destined to be with metal. With plastic, a static charge
>>> is developed and can cause explosions.
>>
>> BULLSHIT!
>>
>> (here we go again!) :-)
>
> It not BS, it could happen but it is not very likely, obtaining the
> perfect mixture of very fine dust, oxiding agent and spark is all
> you need but odds are not at all good that you acheive that bit of
> perfection.

You just explained why it is in fact bullshit. LOTS of things are
"possible." But warning against something that is highly improbably
(read: won't happen in a home woodworking environment) is what makes it
bullshit.

> Now it you mix in dry coffee creamer rather than sawdust your chances
> of an explosion are much better. So do not vacum up a big spill of
> coffee creamer with your dust collector if your hoses are not
> grounded.
>

I'd argue that even that isn't going to happen.
You're watching too many magicians. :-)
Oh, and by the way... do we need to revisit the definition of
"explosion" every single freakin time this subject come up!? :-)

[Leon]

Ten thousand times more likely is that you spill some paint thinner and
drop a lit match on it.

The likelihood of an explosion from a DC is as likely as an explosion by
vacuuming the carpet in your home.

It is a moot point to fear an explosion from a dust collector sucking up
saw dust. There are hundreds of other things in the shop that are more
likely to cause harm.

[Markem]

On Tue, 17 Sep 2013 10:59:15 -0500, -MIKE- <mi...@mikedrumsDOT.com>

I guess you missed the TIC under my name (Tongue In Cheek)

Nah I watch Myth Buster create a dust "explosion" using coffee
creamer.

As far as explosion it is a rapid oxiding of a flammable, contain it
you have problems.

Finally an explosion in a home dust collection is as likely as the
moon being made of cheese.

I ground my hoses because the stuff does not stick as much to the
hoses.

[Markem]

On Tue, 17 Sep 2013 12:58:55 -0500, Leon <lcb11211@swbelldotnet>
wrote:

>On 9/17/2013 10:45 AM, Markem wrote:
>> On Mon, 16 Sep 2013 21:05:31 -0500, -MIKE- <mi...@mikedrumsDOT.com>
>> wrote:
>>
>>> On 9/16/13 8:44 PM, Martin Eastburn wrote:
>>>> Dust is destined to be with metal. With plastic, a static charge is
>>>> developed and can cause explosions.
>>>
>>> BULLSHIT!
>>>
>>> (here we go again!) :-)
>>
>> It not BS, it could happen but it is not very likely, obtaining the
>> perfect mixture of very fine dust, oxiding agent and spark is all you
>> need but odds are not at all good that you acheive that bit of
>> perfection. Now it you mix in dry coffee creamer rather than sawdust
>> your chances of an explosion are much better. So do not vacum up a big
>> spill of coffee creamer with your dust collector if your hoses are not
>> grounded.
>>
>> Mark
>>

Note this abbreviation
>> TIC
That is Tongue In Cheek

[Lee Michaels]

"Leon" <lcb11211@swbelldotnet> wrote

>
> It is a moot point to fear an explosion from a dust collector sucking up
> saw dust. There are hundreds of other things in the shop that are more
> likely to cause harm.

Don't say that Leon! Now I am scared to go out to my shop! ;-)

[G. Ross]

Puckdropper wrote: > dpb<no...@non.net> wrote in news:l17qpg$el5$1...@speranza.aioe.org: >> Agree, the noise is friction losses--_a_bad_thing_ (tm) >> I've been using thinwall DWV plastic (Sch 30 or even 20) and excepting >> for the static electricity annoyance(*) works fine as well. >> (*) But it's no worse than the flex plastic, either... > I wrapped some wire around my planer discharge chute because of the > static. One end is grounded to the body of the planer. It helps quite a > bit. > Bill Pentz's site had a recommendation of putting a piece of metal tape > down the pipe on both inside and outside then connecting them with a > through bolt. Sounds like it worked well. > http://www.billpentz.com/woodworking/cyclone/ducting.cfm#static_electrici > ty > Puckdropper When I set up my collection system 14 years ago, I used ThinWall 6 inch PVC drain pipe with 6 inch flex to my TS and BS, 3 inch flex to the other stuff. I ran a copper wire inside connected to the Dust collector and each machine. In a couple of years I started getting clogs where stringy stuff wrapped around the wire and hung on, gradually growing. Fortunately I used only slip fitting at some of the joints so it could be taken apart. I removed all the wire and have had no problems--never got a shock or spark, even with the 3" flex which I use for vacuuming the floor and around the lathe. I have gotten a shock in my brother's shop while using his shopvac. GW Ross If voting changed anything, they'd make it illegal.

[Leon]

LOL

That is why I finally bought a SawStop!

[Leon]

On 9/17/2013 1:18 PM, Markem wrote:

>
> Note this abbreviation
>>> TIC
> That is Tongue In Cheek
>>>
>>
>>
>>
>> Ten thousand times more likely is that you spill some paint thinner and
>> drop a lit match on it.
>>
>> The likelihood of an explosion from a DC is as likely as an explosion by
>> vacuuming the carpet in your home.
>>
>> It is a moot point to fear an explosion from a dust collector sucking up
>> saw dust. There are hundreds of other things in the shop that are more
>> likely to cause harm.

I thought maybe you had a TIC. ;~)

[no...@none.com]

On Tue, 17 Sep 2013 15:55:14 -0500, Leon <lcb11211@swbelldotnet>

>LOL
>That is why I finally bought a SawStop!

So Leon, how many times have you been tempted to test it out with a
hot dog?

Must be hell going out to use your SawStop and thinking every time,
"Hmmm, I'd really like to test it out at least once!"

[woodchucker]

On 9/16/2013 10:03 PM, Mike Marlow wrote:
> Martin Eastburn wrote:
>
>> Dust is destined to be with metal. With plastic, a static charge is
>> developed and can cause explosions. Some run a bare copper wire down
>> the pipe and ground the wire to bleed off the charge.
>>
>
> Oh no... here we go again...
>

+1
:-)

--
Jeff

[Markem]

All he has to think of the cost of the replacement cartridge and
blade. To chase that thought away.

Mark

[Meanie]

Thank you.

[no...@none.com]

On Tue, 17 Sep 2013 17:35:49 -0500, Markem <mark...@hotmail.com>

>>Must be hell going out to use your SawStop and thinking every time,
>>"Hmmm, I'd really like to test it out at least once!"
>
>All he has to think of the cost of the replacement cartridge and
>blade. To chase that thought away.

Nah! Leon's got enough money if he can afford to buy a professional
SawStop. Come on Leon, tell me you haven't thought about it several
dozen times?

It's like buying a new sports car with the supercharged engine in it.
You know you're going to test it out somewhere on some secluded
highway. And, the cost there is the sweat of thinking that you might
get caught speeding. :)

LEON! LEON! WE WANNA SEE YOUR HOTDOG TEST!!!

[k...@attt.bizz]

On Tue, 17 Sep 2013 17:35:49 -0500, Markem <mark...@hotmail.com>

wrote:

>On Tue, 17 Sep 2013 18:05:27 -0400, no...@none.com wrote:
>
>>On Tue, 17 Sep 2013 15:55:14 -0500, Leon <lcb11211@swbelldotnet>
>>>LOL
>>>That is why I finally bought a SawStop!
>>
>>So Leon, how many times have you been tempted to test it out with a
>>hot dog?
>>
>>Must be hell going out to use your SawStop and thinking every time,
>>"Hmmm, I'd really like to test it out at least once!"
>
>All he has to think of the cost of the replacement cartridge and
>blade. To chase that thought away.

I'm sure I could come up with a blade to donate to the experiment! ;-)

[-MIKE-]

Yes I did. I have never seen that in my 20 years of usenet.
Winky faces, yes. --> ;-)

[Martin Eastburn]

As the dust gets bashed about it comes apart in small bits. Cellulose.
Nice bang.

Insurance man will get you.

Martin

[Leon]

LOL. Actually the spinning blade is still pretty good at earning my
respect, so I don't have any less fear. Send me $175.00 and ill cut a hot
dog and send you pictures. :-)

Aside from that this saw was a much bigger step up in quality than I
expected so I do enjoy that benefit.

[no...@none.com]

On Tue, 17 Sep 2013 23:44:44 -0500, Leon <lcb1...@swbell.net> wrote:
>LOL. Actually the spinning blade is still pretty good at earning my
>respect, so I don't have any less fear. Send me $175.00 and ill cut a hot
>dog and send you pictures. :-)

I really am tempted. I'll put in $25.00. Anyone else interested?

[Joe <Joe@Joe'sPlace.com <invalid>]

Thank you for all of the responses.
My newsreader has a quirk that only showed Leon's first reply - the newsreader thinks everything else with that title is a duplicate - checked Google and there's a whole conversation going on.....
So I'm trying a first post using that method.

Anyway.

No intent to stir the pot. The Relative Humidity is so high where I live (south of some of the frequent posters here) that I really have to try for a while in the winter to generate enough static electricity to give the dog a buzz.

System is 6" metal to a wooden chip separator box, then 6" metal to a Y reducer to 4 inch PVC that goes over head. The RAS, router, tablesaw, bandsaw, scrollsaw, drill press, and a couple utility outlets are all connected from chest or floor level 4" PVC drops via the common clear 2" or 4" wirewound flexible hose. PVC joints are caulk sealed.

I'm very happy with the way the system works. If I remember to open the appropriate blast gate the shop stays fairly clean. The only PITA was installing two 45s to make a very broad turn to come down the wall. The hose would have been nice here - friction loss or not.

Back to the topic - The question of whether the black hose/pipe had the slits in it was the first thing I double checked. The only penetrations are the 4" ones at each end of the hose. Good idea.

The is 4" (I've got some about 2" too) ribbed hard plastic. The sound seems to eminate only from the opening of the hose - there doesn't seem to be any sound along the length of the hose, regardless of how much I attach or how it's broken up, though some may be masked by the howl I'm describing. It makes no difference if it's on the floor or suspended or if 'pressure points' are applied along the hose that should stop any vibrations.

This is likely a case of using the right tool for the job, but I have this stuff, it would be convenient to use it, and I've seen what ->looks<- like it in various shop photos and videos.

If you made it all the way through this epistle, thanks. Ideas are welcomed. If you are using what even resembles this stuff, what is it?

-Joe

[woodchucker]

Nice. I havwe one more year. Wife put the clamp down on this years
purchase. Once my son is done with school I have a green light, until
something else comes up.

--
Jeff

[Morgans]

"Joe <Joe@Joe'sPlace.com <invalid>" <outofh...@gmail.com> wrote \

> The is 4" (I've got some about 2" too) ribbed hard plastic. The sound
> seems to eminate only from the opening of the hose - there doesn't seem to
> be any sound along the length of the hose, regardless of how much I attach
> or how it's broken up, though some may be masked by the howl I'm
> describing. It makes no difference if it's on the floor or suspended or
> if 'pressure points' are applied along the hose that should stop any
> vibrations.
>
> This is likely a case of using the right tool for the job, but I have this
> stuff, it would be convenient to use it, and I've seen what ->looks<- like
> it in various shop photos and videos.
>
> If you made it all the way through this epistle, thanks. Ideas are
> welcomed. If you are using what even resembles this stuff, what is it?

If you take any ribbed tube and swing it around in a circle over your head
hard and fast enough, you will get a howl out of it. It is the ribs acting
like a whistle's splitter where you blow across the split. A hose like a
vacuum cleaner has ridges but they are in a spiral and they are not sharp,
so no noise...

Jim in NC

[Mike Marlow]

Martin Eastburn wrote:

> As the dust gets bashed about it comes apart in small bits. Cellulose.
> Nice bang.
>
> Insurance man will get you.
>

Unfortunately, neither assertion above is true. Witness the absence of any
reports of exploding dust collection systems, and further, witness the
absence of reports of insurance companies denying claims related to dust
explosions in home workshops. Both are well worn misconceptions that have
experienced enough dialog here over the years, to qualify for inclusion in a
FAQ - if we really had one...

--

-Mike-
mmarlo...@windstream.net

[Leon]

"SonomaProducts.com" <bwx...@yahoo.com> wrote:
>> My hose is long enough that it is always in contact with the concrete
>>
>> floor. That contact seems to take care of static discharge as I can't
>>
>> remember ever being shocked by the hose. A different climate might have
>>
>> different results.
>
> Stop bragging. My "hose" drags around on the floor also if I don't tie it
> too my leg. It's a bitch when I step on that sucker..

My floor is cold too! :-)

[Leon]

Actually, it is "fortunate" that neither assertion above is true. ;~)