¿ªÔÆÌåÓý

ctrl + shift + ? for shortcuts
© 2025 Groups.io

Building a closet for dust collector


 

Hi all, the journey of building out the new shop continues.? I am now planning a closet to house the cyclone dust collector.? Being an engineer, I have to research everything.? I found a fantastic website with data on different wall construction and the STC (sound transmission coeff) for each.



I had been planning to do 2x6 plates and staggered 2x4 studs.? From the data at the site I was surprised at a couple of things.? First, steel studs are meaningfully better the wood studs.? Second if building two walls, having drywall only on the two exterior sides is better than having drywall sides of the studs facing inside the double wall.??

I have decided to do double steel stud walls with 2 1/2" steel studs.? I think I want 20 gauge and not the cheaper 25 gauge. any input on that?

I will install 5/8" drywall inside, a layer of green glue, and a second layer of 5/8" drywall over that and then 5/8" drywall outside. If not quiet enough I will install green glue and a second layer of 5/8" drywall outside.

I need a door to access the drum and a door to access the filters.? I am fairly certain I will do some sort of stress skin construction for the doors.

Any suggestions on how to get the dust inlet sealed to the sound proof wall?? I am doing a folded duct with 5X the cross sectional area of the exhaust port for flow the air conditioned air back into the room.


 

¿ªÔÆÌåÓý

I would use a rubber boot, like that they use to seal roof penetrations, like this, not sure how big you need and wether you will be able to find them¡­

You could also just cut some out of a rubber sheet with an exacto knife if you can¡¯t find one large enough. The rubber will seal but not transmit the noise.

Master Flash 1/4 in. x 5-3/4 in. Aluminum Base Vent Pipe Flashing with Adjustable Rubber Collar in Black

Brian Lamb
blamb11@...
www.lambtoolworks.com




On May 20, 2020, at 2:19 PM, Joe Jensen <joe.jensen@...> wrote:

Hi all, the journey of building out the new shop continues.? I am now planning a closet to house the cyclone dust collector.? Being an engineer, I have to research everything.? I found a fantastic website with data on different wall construction and the STC (sound transmission coeff) for each.



I had been planning to do 2x6 plates and staggered 2x4 studs.? From the data at the site I was surprised at a couple of things.? First, steel studs are meaningfully better the wood studs.? Second if building two walls, having drywall only on the two exterior sides is better than having drywall sides of the studs facing inside the double wall.??

I have decided to do double steel stud walls with 2 1/2" steel studs.? I think I want 20 gauge and not the cheaper 25 gauge. any input on that?

I will install 5/8" drywall inside, a layer of green glue, and a second layer of 5/8" drywall over that and then 5/8" drywall outside. If not quiet enough I will install green glue and a second layer of 5/8" drywall outside.

I need a door to access the drum and a door to access the filters.? I am fairly certain I will do some sort of stress skin construction for the doors.

Any suggestions on how to get the dust inlet sealed to the sound proof wall?? I am doing a folded duct with 5X the cross sectional area of the exhaust port for flow the air conditioned air back into the room.



 

¿ªÔÆÌåÓý

I¡¯m managing a remodel project just now where I¡¯ve specified the?KINETICS?IsoMax system between bedrooms, media room, ceilings, etc. ? This is basically putting the equivalent of a metal stud horizontally over the wood studded wall, and the horizontal metal drywall hanger is itself attached to the stud with a rubber-isolating clip. ? I wonder how this will compare to your alternatives. ? ??




David Best

https://www.instagram.com/davidpbest/





On May 20, 2020, at 2:19 PM, Joe Jensen <joe.jensen@...> wrote:

Hi all, the journey of building out the new shop continues.? I am now planning a closet to house the cyclone dust collector.? Being an engineer, I have to research everything.? I found a fantastic website with data on different wall construction and the STC (sound transmission coeff) for each.



I had been planning to do 2x6 plates and staggered 2x4 studs.? From the data at the site I was surprised at a couple of things.? First, steel studs are meaningfully better the wood studs.? Second if building two walls, having drywall only on the two exterior sides is better than having drywall sides of the studs facing inside the double wall.??

I have decided to do double steel stud walls with 2 1/2" steel studs.? I think I want 20 gauge and not the cheaper 25 gauge. any input on that?

I will install 5/8" drywall inside, a layer of green glue, and a second layer of 5/8" drywall over that and then 5/8" drywall outside. If not quiet enough I will install green glue and a second layer of 5/8" drywall outside.

I need a door to access the drum and a door to access the filters.? I am fairly certain I will do some sort of stress skin construction for the doors.

Any suggestions on how to get the dust inlet sealed to the sound proof wall?? I am doing a folded duct with 5X the cross sectional area of the exhaust port for flow the air conditioned air back into the room.



 

Maybe I'm not up to speed here, but have you already run this DC cyclone to verify the noise? For all that closet work, it might make sense to consider replacing the drive motor set with something higher quality and quieter.?

Our shop was worried about noise but our Clearvue Max DC is not a nuisance at all when running and as a result we never even added any baffles around the top. Wearing hearing protection for saw cutting, we often forget to turn it off because it's not noticeable. The saw cutting and CNC spindle screaming are much more a nuisance.

On another note, we had a sound issue and put a lot of research into the air compressor to replace a failing vertical. It ended up between Eaton E-Max and Eastwood Company's QST-30/60. Having bought the Eastwood, we have the air compressor out in the open in the shop and the pressure release at the end of the cycle surprises people, but otherwise sounds about like a fridge running and can handle 100% duty cycle. I'd put multiple of these in parallel until getting up the the minimum requirements for an industrial rotary screw.

???

--
Brett Wissel
Saint Louis Restoration
1831 S Kingshighway Blvd (at Shaw Blvd)
St Louis, MO 63110

314.772.2167
brett@...


 

Acoustic engineers sometimes cite water as a metaphor for sound to make the point that is leaks through the smallest and most permeable points.? An elaborate wall assembly can be rendered nearly useless by small details, like door seals, wall-to-ceiling joints, ceiling transmission pathways, etc.? If you want to get more thorough i your research than just the STC ratings of walls, there's tons of discussions on home recording studio forums.??

Also note that sound mitigation methods are?highly sensitive to frequency.? The STC rating is for speech frequencies.? As it says on the STC website you mention:

"The STC rating is based on performance with frequencies from 125 to 4000 Hertz (the speech frequencies). The rating provides no evaluation of the barrier's ability to block low frequency noise, such as the bass in music or the noise of some mechanical equipment"??

I originally put my cyclone in a cabinet somewhat like what you describe -- double drywall, green glues, etc.? After a move, I delayed re-building it and ultimately never got around to it.? The benefits didn't seem worth the effort.? I only use the cyclone when machines are running, and most machines are louder than the cyclone, and silencing the cyclone is pointless in this situation.?


On Wed, May 20, 2020 at 2:29 PM david@... via <david=[email protected]> wrote:
I¡¯m managing a remodel project just now where I¡¯ve specified the?KINETICS?IsoMax system between bedrooms, media room, ceilings, etc. ? This is basically putting the equivalent of a metal stud horizontally over the wood studded wall, and the horizontal metal drywall hanger is itself attached to the stud with a rubber-isolating clip. ? I wonder how this will compare to your alternatives. ? ??




David Best







On May 20, 2020, at 2:19 PM, Joe Jensen <joe.jensen@...> wrote:

Hi all, the journey of building out the new shop continues.? I am now planning a closet to house the cyclone dust collector.? Being an engineer, I have to research everything.? I found a fantastic website with data on different wall construction and the STC (sound transmission coeff) for each.



I had been planning to do 2x6 plates and staggered 2x4 studs.? From the data at the site I was surprised at a couple of things.? First, steel studs are meaningfully better the wood studs.? Second if building two walls, having drywall only on the two exterior sides is better than having drywall sides of the studs facing inside the double wall.??

I have decided to do double steel stud walls with 2 1/2" steel studs.? I think I want 20 gauge and not the cheaper 25 gauge. any input on that?

I will install 5/8" drywall inside, a layer of green glue, and a second layer of 5/8" drywall over that and then 5/8" drywall outside. If not quiet enough I will install green glue and a second layer of 5/8" drywall outside.

I need a door to access the drum and a door to access the filters.? I am fairly certain I will do some sort of stress skin construction for the doors.

Any suggestions on how to get the dust inlet sealed to the sound proof wall?? I am doing a folded duct with 5X the cross sectional area of the exhaust port for flow the air conditioned air back into the room.



 

¿ªÔÆÌåÓý

This is a modern and probably easier to install version of something that used to be called ¡°resilient channel¡±. If it is installed properly it is pretty effective; if you use screws that are too long and go through the channel into the stud you will short circuit the isolation and lose almost all of the benefit.

?

From: "[email protected]" <[email protected]> on behalf of "david@... via groups.io" <david@...>
Reply-To: "[email protected]" <[email protected]>
Date: Wednesday, May 20, 2020 at 4:29 PM
To: "[email protected]" <[email protected]>
Subject: Re: [FOG] Building a closet for dust collector

?

I¡¯m managing a remodel project just now where I¡¯ve specified the?KINETICS?IsoMax system between bedrooms, media room, ceilings, etc. ? This is basically putting the equivalent of a metal stud horizontally over the wood studded wall, and the horizontal metal drywall hanger is itself attached to the stud with a rubber-isolating clip. ? I wonder how this will compare to your alternatives. ? ??

?

?

?

David Best

https://www.instagram.com/davidpbest/

?

?

?

?

On May 20, 2020, at 2:19 PM, Joe Jensen <joe.jensen@...> wrote:

?

Hi all, the journey of building out the new shop continues.? I am now planning a closet to house the cyclone dust collector.? Being an engineer, I have to research everything.? I found a fantastic website with data on different wall construction and the STC (sound transmission coeff) for each.



I had been planning to do 2x6 plates and staggered 2x4 studs.? From the data at the site I was surprised at a couple of things.? First, steel studs are meaningfully better the wood studs.? Second if building two walls, having drywall only on the two exterior sides is better than having drywall sides of the studs facing inside the double wall.??

I have decided to do double steel stud walls with 2 1/2" steel studs.? I think I want 20 gauge and not the cheaper 25 gauge. any input on that?

I will install 5/8" drywall inside, a layer of green glue, and a second layer of 5/8" drywall over that and then 5/8" drywall outside. If not quiet enough I will install green glue and a second layer of 5/8" drywall outside.

I need a door to access the drum and a door to access the filters.? I am fairly certain I will do some sort of stress skin construction for the doors.

Any suggestions on how to get the dust inlet sealed to the sound proof wall?? I am doing a folded duct with 5X the cross sectional area of the exhaust port for flow the air conditioned air back into the room.

?


 

I've been using this collector in my 3 car garage shop for years.? I do a lot that is not noisy enough to require ear muffs. The noise mostly comes from the exhaust and it's my understanding that forcing the exhaust to make a 90 degree turn or 180 degrees of turn reduces the noise a lot.??


 

¿ªÔÆÌåÓý

Yes on the STC specs.? I¡¯m not worried about the frequencies below 125hz, at least to my ears they are 1Khz and higher.? The collector is supposed to be only 86db but I find it annoying.?

?

Maybe I¡¯ll hold off for a while, still need to install the duct work.

?

Anyone have advice on holding two pieces of Nordfab and snapping the clamp on? Seems like a two person job?

?

From: [email protected] <[email protected]> On Behalf Of mark thomas
Sent: Wednesday, May 20, 2020 3:03 PM
To: Felder Owner Group <[email protected]>
Subject: Re: [FOG] Building a closet for dust collector

?

Acoustic engineers sometimes cite water as a metaphor for sound to make the point that is leaks through the smallest and most permeable points.? An elaborate wall assembly can be rendered nearly useless by small details, like door seals, wall-to-ceiling joints, ceiling transmission pathways, etc.? If you want to get more thorough i your research than just the STC ratings of walls, there's tons of discussions on home recording studio forums.??

?

Also note that sound mitigation methods are?highly sensitive to frequency.? The STC rating is for speech frequencies.? As it says on the STC website you mention:

?

"The STC rating is based on performance with frequencies from 125 to 4000 Hertz (the speech frequencies). The rating provides no evaluation of the barrier's ability to block low frequency noise, such as the bass in music or the noise of some mechanical equipment"??

?

I originally put my cyclone in a cabinet somewhat like what you describe -- double drywall, green glues, etc.? After a move, I delayed re-building it and ultimately never got around to it.? The benefits didn't seem worth the effort.? I only use the cyclone when machines are running, and most machines are louder than the cyclone, and silencing the cyclone is pointless in this situation.?

?

On Wed, May 20, 2020 at 2:29 PM david@... via <david=[email protected]> wrote:

I¡¯m managing a remodel project just now where I¡¯ve specified the?KINETICS?IsoMax system between bedrooms, media room, ceilings, etc. ? This is basically putting the equivalent of a metal stud horizontally over the wood studded wall, and the horizontal metal drywall hanger is itself attached to the stud with a rubber-isolating clip. ? I wonder how this will compare to your alternatives. ? ??

?

?

?

David Best

?

?

?

?

On May 20, 2020, at 2:19 PM, Joe Jensen <joe.jensen@...> wrote:

?

Hi all, the journey of building out the new shop continues.? I am now planning a closet to house the cyclone dust collector.? Being an engineer, I have to research everything.? I found a fantastic website with data on different wall construction and the STC (sound transmission coeff) for each.



I had been planning to do 2x6 plates and staggered 2x4 studs.? From the data at the site I was surprised at a couple of things.? First, steel studs are meaningfully better the wood studs.? Second if building two walls, having drywall only on the two exterior sides is better than having drywall sides of the studs facing inside the double wall.??

I have decided to do double steel stud walls with 2 1/2" steel studs.? I think I want 20 gauge and not the cheaper 25 gauge. any input on that?

I will install 5/8" drywall inside, a layer of green glue, and a second layer of 5/8" drywall over that and then 5/8" drywall outside. If not quiet enough I will install green glue and a second layer of 5/8" drywall outside.

I need a door to access the drum and a door to access the filters.? I am fairly certain I will do some sort of stress skin construction for the doors.

Any suggestions on how to get the dust inlet sealed to the sound proof wall?? I am doing a folded duct with 5X the cross sectional area of the exhaust port for flow the air conditioned air back into the room.

?


 

Nordfab
Put the clamp on one side 3 or 4 times to soften the seal. Then put the clamp on the low side so it can cradle the mating piece with the clamp handle in your hand ready.?
Not a 2 person job at all....

Bill Belanger?

On Wed, May 20, 2020 at 15:37 Joe Jensen <joe.jensen@...> wrote:

Yes on the STC specs.? I¡¯m not worried about the frequencies below 125hz, at least to my ears they are 1Khz and higher.? The collector is supposed to be only 86db but I find it annoying.?

?

Maybe I¡¯ll hold off for a while, still need to install the duct work.

?

Anyone have advice on holding two pieces of Nordfab and snapping the clamp on? Seems like a two person job?

?

From: [email protected] <[email protected]> On Behalf Of mark thomas
Sent: Wednesday, May 20, 2020 3:03 PM
To: Felder Owner Group <[email protected]>
Subject: Re: [FOG] Building a closet for dust collector

?

Acoustic engineers sometimes cite water as a metaphor for sound to make the point that is leaks through the smallest and most permeable points.? An elaborate wall assembly can be rendered nearly useless by small details, like door seals, wall-to-ceiling joints, ceiling transmission pathways, etc.? If you want to get more thorough i your research than just the STC ratings of walls, there's tons of discussions on home recording studio forums.??

?

Also note that sound mitigation methods are?highly sensitive to frequency.? The STC rating is for speech frequencies.? As it says on the STC website you mention:

?

"The STC rating is based on performance with frequencies from 125 to 4000 Hertz (the speech frequencies). The rating provides no evaluation of the barrier's ability to block low frequency noise, such as the bass in music or the noise of some mechanical equipment"??

?

I originally put my cyclone in a cabinet somewhat like what you describe -- double drywall, green glues, etc.? After a move, I delayed re-building it and ultimately never got around to it.? The benefits didn't seem worth the effort.? I only use the cyclone when machines are running, and most machines are louder than the cyclone, and silencing the cyclone is pointless in this situation.?

?

On Wed, May 20, 2020 at 2:29 PM david@... via <david=[email protected]> wrote:

I¡¯m managing a remodel project just now where I¡¯ve specified the?KINETICS?IsoMax system between bedrooms, media room, ceilings, etc. ? This is basically putting the equivalent of a metal stud horizontally over the wood studded wall, and the horizontal metal drywall hanger is itself attached to the stud with a rubber-isolating clip. ? I wonder how this will compare to your alternatives. ? ??

?

?

?

David Best

?

?

?

?

On May 20, 2020, at 2:19 PM, Joe Jensen <joe.jensen@...> wrote:

?

Hi all, the journey of building out the new shop continues.? I am now planning a closet to house the cyclone dust collector.? Being an engineer, I have to research everything.? I found a fantastic website with data on different wall construction and the STC (sound transmission coeff) for each.



I had been planning to do 2x6 plates and staggered 2x4 studs.? From the data at the site I was surprised at a couple of things.? First, steel studs are meaningfully better the wood studs.? Second if building two walls, having drywall only on the two exterior sides is better than having drywall sides of the studs facing inside the double wall.??

I have decided to do double steel stud walls with 2 1/2" steel studs.? I think I want 20 gauge and not the cheaper 25 gauge. any input on that?

I will install 5/8" drywall inside, a layer of green glue, and a second layer of 5/8" drywall over that and then 5/8" drywall outside. If not quiet enough I will install green glue and a second layer of 5/8" drywall outside.

I need a door to access the drum and a door to access the filters.? I am fairly certain I will do some sort of stress skin construction for the doors.

Any suggestions on how to get the dust inlet sealed to the sound proof wall?? I am doing a folded duct with 5X the cross sectional area of the exhaust port for flow the air conditioned air back into the room.

?


 

Joe, understand the context better, thanks. With your added info, maybe also something along the lines of an inline muffler/silencer on the exhaust side is worth?trying. We used to use them for vent fans and compressed air exhaust for the rock drills? in mining and they worked great, though did need cleaning they seldom received?from dust and diesel particulate collecting .?

?

?


On Wed, May 20, 2020 at 5:34 PM Joe Jensen <joe.jensen@...> wrote:
I've been using this collector in my 3 car garage shop for years.? I do a lot that is not noisy enough to require ear muffs. The noise mostly comes from the exhaust and it's my understanding that forcing the exhaust to make a 90 degree turn or 180 degrees of turn reduces the noise a lot.??



--
Brett Wissel
Saint Louis Restoration
1831 S Kingshighway Blvd (at Shaw Blvd)
St Louis, MO 63110

314.772.2167
brett@...


 

¿ªÔÆÌåÓý

Brett, that would be a lot easier.? The collector is a bastard modified Oneida.? It¡¯s basically their current 5HP Smart collector with one large HEPA filter.? I am going to modify again to double the filter area.? There is a small Onieda silencer inside the current filter mount.? Maybe a longer one before the filters is the right answer.? It¡¯s really just the noise from the output I¡¯d like to quiet.? How effective are the silencers? I suspect they disrupt the airflow, maybe put a larger diameter in and then split to dual 8¡± outputs?

?

From: [email protected] <[email protected]> On Behalf Of Brett Wissel
Sent: Wednesday, May 20, 2020 3:46 PM
To: [email protected]
Subject: Re: [FOG] Building a closet for dust collector

?

Joe, understand the context better, thanks. With your added info, maybe also something along the lines of an inline muffler/silencer on the exhaust side is worth?trying. We used to use them for vent fans and compressed air exhaust for the rock drills? in mining and they worked great, though did need cleaning they seldom received?from dust and diesel particulate collecting .?

?

?

?

?

?

On Wed, May 20, 2020 at 5:34 PM Joe Jensen <joe.jensen@...> wrote:

I've been using this collector in my 3 car garage shop for years.? I do a lot that is not noisy enough to require ear muffs. The noise mostly comes from the exhaust and it's my understanding that forcing the exhaust to make a 90 degree turn or 180 degrees of turn reduces the noise a lot.??


?

--

Brett Wissel
Saint Louis Restoration
1831 S Kingshighway Blvd (at Shaw Blvd)
St Louis, MO 63110

314.772.2167
brett@...


 

¿ªÔÆÌåÓý

Line the exhaust baffles with sound deadening foam and it will really cut down the noise transmission. Did that on a air handler that was in a closet close to a living room and the difference was amazing.

Brian Lamb
blamb11@...
www.lambtoolworks.com




On May 20, 2020, at 3:34 PM, Joe Jensen <joe.jensen@...> wrote:

I've been using this collector in my 3 car garage shop for years.? I do a lot that is not noisy enough to require ear muffs. The noise mostly comes from the exhaust and it's my understanding that forcing the exhaust to make a 90 degree turn or 180 degrees of turn reduces the noise a lot.??


 

¿ªÔÆÌåÓý

I have the silencer on my Oneida, it helps a little, but not a lot.

Brian Lamb
blamb11@...
www.lambtoolworks.com




On May 20, 2020, at 3:50 PM, Joe Jensen <joe.jensen@...> wrote:

Brett, that would be a lot easier.? The collector is a bastard modified Oneida.? It¡¯s basically their current 5HP Smart collector with one large HEPA filter.? I am going to modify again to double the filter area.? There is a small Onieda silencer inside the current filter mount.? Maybe a longer one before the filters is the right answer.? It¡¯s really just the noise from the output I¡¯d like to quiet.? How effective are the silencers? I suspect they disrupt the airflow, maybe put a larger diameter in and then split to dual 8¡± outputs?

?

From: [email protected] <[email protected]> On Behalf Of Brett Wissel
Sent: Wednesday, May 20, 2020 3:46 PM
To: [email protected]
Subject: Re: [FOG] Building a closet for dust collector

?

Joe, understand the context better, thanks. With your added info, maybe also something along the lines of an inline muffler/silencer on the exhaust side is worth?trying. We used to use them for vent fans and compressed air exhaust for the rock drills? in mining and they worked great, though did need cleaning they seldom received?from dust and diesel particulate collecting .?

?

?

?

?

?

On Wed, May 20, 2020 at 5:34 PM Joe Jensen <joe.jensen@...> wrote:

I've been using this collector in my 3 car garage shop for years.? I do a lot that is not noisy enough to require ear muffs. The noise mostly comes from the exhaust and it's my understanding that forcing the exhaust to make a 90 degree turn or 180 degrees of turn reduces the noise a lot.??


?

--

Brett Wissel
Saint Louis Restoration
1831 S Kingshighway Blvd (at Shaw Blvd)
St Louis, MO 63110

314.772.2167
brett@...




 

If you're lucky enough to live where you can exhaust outdoors, that's the ultimate "silencer".? It's also improves flow and eliminates filters.? ?

Mine exhausts thru?roof, pointed about 30¡ã from horizontal away from my close neighbor.? You might be surprised at how tolerable the noise is.? None of my neighbors have ever even commented on it.? It's a very low-pitched sound and when blowing into open air dissipates very fast, unlike when blowing into a shop where it reverberates around.??

On Wed, May 20, 2020 at 4:41 PM Brian Lamb <blamb11@...> wrote:
I have the silencer on my Oneida, it helps a little, but not a lot.

Brian Lamb
blamb11@...





On May 20, 2020, at 3:50 PM, Joe Jensen <joe.jensen@...> wrote:

Brett, that would be a lot easier.? The collector is a bastard modified Oneida.? It¡¯s basically their current 5HP Smart collector with one large HEPA filter.? I am going to modify again to double the filter area.? There is a small Onieda silencer inside the current filter mount.? Maybe a longer one before the filters is the right answer.? It¡¯s really just the noise from the output I¡¯d like to quiet.? How effective are the silencers? I suspect they disrupt the airflow, maybe put a larger diameter in and then split to dual 8¡± outputs?

?

From: [email protected] <[email protected]> On Behalf Of Brett Wissel
Sent: Wednesday, May 20, 2020 3:46 PM
To: [email protected]
Subject: Re: [FOG] Building a closet for dust collector

?

Joe, understand the context better, thanks. With your added info, maybe also something along the lines of an inline muffler/silencer on the exhaust side is worth?trying. We used to use them for vent fans and compressed air exhaust for the rock drills? in mining and they worked great, though did need cleaning they seldom received?from dust and diesel particulate collecting .?

?

?

?

?

?

On Wed, May 20, 2020 at 5:34 PM Joe Jensen <joe.jensen@...> wrote:

I've been using this collector in my 3 car garage shop for years.? I do a lot that is not noisy enough to require ear muffs. The noise mostly comes from the exhaust and it's my understanding that forcing the exhaust to make a 90 degree turn or 180 degrees of turn reduces the noise a lot.??


?

--

Brett Wissel
Saint Louis Restoration
1831 S Kingshighway Blvd (at Shaw Blvd)
St Louis, MO 63110

314.772.2167
brett@...




 

My closet cut about 10dB.? ?There is huge difference between 76 and 86 dB of course, and if you want to work without ear protection, a closet will will?get?you there.? Not silent by any stretch, but comfortable.


On Wed, May 20, 2020 at 3:37 PM Joe Jensen <joe.jensen@...> wrote:

Yes on the STC specs.? I¡¯m not worried about the frequencies below 125hz, at least to my ears they are 1Khz and higher.? The collector is supposed to be only 86db but I find it annoying.?

?

Maybe I¡¯ll hold off for a while, still need to install the duct work.

?

Anyone have advice on holding two pieces of Nordfab and snapping the clamp on? Seems like a two person job?

?

From: [email protected] <[email protected]> On Behalf Of mark thomas
Sent: Wednesday, May 20, 2020 3:03 PM
To: Felder Owner Group <[email protected]>
Subject: Re: [FOG] Building a closet for dust collector

?

Acoustic engineers sometimes cite water as a metaphor for sound to make the point that is leaks through the smallest and most permeable points.? An elaborate wall assembly can be rendered nearly useless by small details, like door seals, wall-to-ceiling joints, ceiling transmission pathways, etc.? If you want to get more thorough i your research than just the STC ratings of walls, there's tons of discussions on home recording studio forums.??

?

Also note that sound mitigation methods are?highly sensitive to frequency.? The STC rating is for speech frequencies.? As it says on the STC website you mention:

?

"The STC rating is based on performance with frequencies from 125 to 4000 Hertz (the speech frequencies). The rating provides no evaluation of the barrier's ability to block low frequency noise, such as the bass in music or the noise of some mechanical equipment"??

?

I originally put my cyclone in a cabinet somewhat like what you describe -- double drywall, green glues, etc.? After a move, I delayed re-building it and ultimately never got around to it.? The benefits didn't seem worth the effort.? I only use the cyclone when machines are running, and most machines are louder than the cyclone, and silencing the cyclone is pointless in this situation.?

?

On Wed, May 20, 2020 at 2:29 PM david@... via <david=[email protected]> wrote:

I¡¯m managing a remodel project just now where I¡¯ve specified the?KINETICS?IsoMax system between bedrooms, media room, ceilings, etc. ? This is basically putting the equivalent of a metal stud horizontally over the wood studded wall, and the horizontal metal drywall hanger is itself attached to the stud with a rubber-isolating clip. ? I wonder how this will compare to your alternatives. ? ??

?

?

?

David Best

?

?

?

?

On May 20, 2020, at 2:19 PM, Joe Jensen <joe.jensen@...> wrote:

?

Hi all, the journey of building out the new shop continues.? I am now planning a closet to house the cyclone dust collector.? Being an engineer, I have to research everything.? I found a fantastic website with data on different wall construction and the STC (sound transmission coeff) for each.



I had been planning to do 2x6 plates and staggered 2x4 studs.? From the data at the site I was surprised at a couple of things.? First, steel studs are meaningfully better the wood studs.? Second if building two walls, having drywall only on the two exterior sides is better than having drywall sides of the studs facing inside the double wall.??

I have decided to do double steel stud walls with 2 1/2" steel studs.? I think I want 20 gauge and not the cheaper 25 gauge. any input on that?

I will install 5/8" drywall inside, a layer of green glue, and a second layer of 5/8" drywall over that and then 5/8" drywall outside. If not quiet enough I will install green glue and a second layer of 5/8" drywall outside.

I need a door to access the drum and a door to access the filters.? I am fairly certain I will do some sort of stress skin construction for the doors.

Any suggestions on how to get the dust inlet sealed to the sound proof wall?? I am doing a folded duct with 5X the cross sectional area of the exhaust port for flow the air conditioned air back into the room.

?


 

Once upon a time, I had an Oneida inside my shop. ?Several years ago, I built a "lean-to" shed behind the shop, I removed a window in the back to allow the room for the duct work to get to the dust collector and air can return. ?I looked up the pros and cons of exhausting to the outside with a seal. ?I keep my shop climate controlled and it was my understanding that when you suck air out that is not good for air conditioning. ?By having an opening, that allows the well insulated shed to be climate controlled. ?Sure, there would be less noise if totally isolated, and I very much like quiet when it comes to noice from things like air compressors and dust collectors, but for me, noise is not a problem. ?If I had a very noisy dust collector, that would be different. Fortunately, my dust collector is extremely quiet. ?

I have been very happy with my shed. ?I "bought" space inside the shop. ?I do think it is a bit quieter being back there even though there is a connection, and it is setup where there are larger "French" doors in the back so when it is time to empty the dust bins, I wheel the green waste cans to the door, and empty them where if any dust gets on the concrete outside, no problem. ?Dust in the air blows away.

Anyhow, just some feedback. ?


 

Joe,
If you assemble the parts on the floor then lift them up its easier.

--
Jason
J. Holtz Furniture
3307 Snelling Ave. South
Minneapolis, MN 55406


 

I don¡¯t agree Jason. Put three pieces together, now you have a heavier unit to attach. Then it becomes a 2 person job.

Bill Belanger?

On Wed, May 20, 2020 at 18:20 Jason Holtz <jholtzy@...> wrote:
Joe,
If you assemble the parts on the floor then lift them up its easier.

--
Jason
J. Holtz Furniture


 

Of course you don¡¯t want to pay a lot of money to condition air and then blow it all outside.? But it depends on climate and how much you use it.? Obviously in a professional?shop running 8 hours a day in snow country,? blowing outside seems impractical.? ?But a hobbyist running a cyclone intermittently in a moderate climate is not going to see a significant impact on air conditioning bill.

On Wed, May 20, 2020 at 5:54 PM joelgelman via <joelgelman=[email protected]> wrote:
Once upon a time, I had an Oneida inside my shop.? Several years ago, I built a "lean-to" shed behind the shop, I removed a window in the back to allow the room for the duct work to get to the dust collector and air can return.? I looked up the pros and cons of exhausting to the outside with a seal.? I keep my shop climate controlled and it was my understanding that when you suck air out that is not good for air conditioning.? By having an opening, that allows the well insulated shed to be climate controlled.? Sure, there would be less noise if totally isolated, and I very much like quiet when it comes to noice from things like air compressors and dust collectors, but for me, noise is not a problem.? If I had a very noisy dust collector, that would be different. Fortunately, my dust collector is extremely quiet. ?

I have been very happy with my shed.? I "bought" space inside the shop.? I do think it is a bit quieter being back there even though there is a connection, and it is setup where there are larger "French" doors in the back so when it is time to empty the dust bins, I wheel the green waste cans to the door, and empty them where if any dust gets on the concrete outside, no problem.? Dust in the air blows away.

Anyhow, just some feedback. ?


 

Joe,
This is how I did it.
I spent a lot of time laying it out on paper, pin pointing my exact location drops. After many layouts when I found the best one I ordered the parts. While waiting for delivery I layed out my plan on the shop floor with a marker. Then using my laser I shot up all the lines and hung the threaded rod. When it all arrived I pre assembled everything on the floor and cut all the pieces. I hung pulleys above each section and my friend came over and we hoisted up 20n to thirty foot sections. I went very well limited ladder work and all done in a day. However 30 ft of NordFab at a time was way heavier than I thought. It all worked out great. Last thing i wanted to do is to try to take measurements, cut pieces, and try and clamp all those connectors 16 feet off the ground. If I ever had to do it again and I will for the addition, I will do it the same way.
Glen
Alpine Moulding and Millwork Inc.
Mail: ?? P.O. Box 257
?????????? Avery, CA. 95224
Shop: 441 Pennsylvania Gulch Road
????????? Murphys, CA. 95247
????????? 650-678-3137
LIC # 707507


On Wed, May 20, 2020 at 6:25 PM Bill B¨¦langer <Bllblngr@...> wrote:
I don¡¯t agree Jason. Put three pieces together, now you have a heavier unit to attach. Then it becomes a 2 person job.

Bill Belanger?

On Wed, May 20, 2020 at 18:20 Jason Holtz <jholtzy@...> wrote:
Joe,
If you assemble the parts on the floor then lift them up its easier.

--
Jason
J. Holtz Furniture