Thread: Reducing dust extraction sound

So far the enclosure has proven to be quite valuable.
I have been tinkering with the idea of putting an extra smaller cartridge filter within the sound baffle area to the right of the existing filter cartridge. The sound baffle area would have to be closed off from the main dust extractor cavity and a hole in the base of the sound baffle section be made for the escaping air. This air would pass through the smaller filter in place of the sheet filter that is there already. Cleaning the smaller filter could be done by applying the the main hose to where the air enters the smaller filter.

The only problem I see is that it's too clean. Have you been using it properly? 14 months since the last post and no dust.



Looks good, great idea

Regards,

James

Originally Posted by yjnb

The only problem I see is that it's too clean. Have you been using it properly? 14 months since the last post and no dust.



Looks good, great idea

Regards,

James

Yeh, it looks clean in the pictures, but on closer inspection one can see very light dust deposition on the outside of the door below the louvre vent. If the second cartridge filter can remove this dust I will be a happy chappy and if not, I won't be too bothered.
Zelk

Did you manage to reduce the TS noise? I suspect this is nigh on impossible as most of it is the blade, some blades being quiter than others.

Originally Posted by Mini

Did you manage to reduce the TS noise? I suspect this is nigh on impossible as most of it is the blade, some blades being quiter than others.

Nope, too complicated.
I agree totally, all I could do is suppress the dusty noise that travels through the flexible ducting and enters the TS housing.

Zelk

Originally Posted by zelk

Yeh, it looks clean in the pictures, but on closer inspection one can see very light dust deposition on the outside of the door below the louvre vent. If the second cartridge filter can remove this dust I will be a happy chappy and if not, I won't be too bothered.
Zelk

That's a very nice setup you have there.

The stuff you can see is not as much of a health problem as the stuff you cannot see since this will all be coming back into the shed because the shed is at a negative pressure. If it were me I would be venting to the outside so it has a chance to dilute into the atmosphere before coming back inside the shed. Like they say about other wind - its better out than in!

Originally Posted by BobL

That's a very nice setup you have there.

The stuff you can see is not as much of a health problem as the stuff you cannot see since this will all be coming back into the shed because the shed is at a negative pressure. If it were me I would be venting to the outside so it has a chance to dilute into the atmosphere before coming back inside the shed. Like they say about other wind - its better out than in!

I agree Bobl, it may not be worth it.

I'm thinking that maybe it would be better to fit an exhaust fan at one end of the workshop, this would attend to the dust from the dusty and other machines not connected to it, rather than using a room air filtration device which has to be cleaned regularly to be effective.

I can't help but think that the the accumulated dust is a combination of visible and non visible particles statically held together.

Zelk

Originally Posted by dazzler

Just so what I was saying was clear and probably a similar setup to skews I have attached the following pic.

Attachment 41608

Without the long lengths it is much louder.

cheers


dazzler

Dazzler, I am about to setup my workshop, could you please explain the setup in the photo with the large blue drums, is there anything special you have done inside them,and do you have shut off gates when using only one machine
Regards
Brian

There has been some further development with the dusty soundproof enclosure.

Earlier in this thread, I have said that there was no point in further improving the enclosure if there was no attention to the overall room acoustics.

In a previous thread, https://www.woodworkforums.com/showth...ght=extraction, I mentioned that I vented the dusty enclosure to the outside, as suggested by a few forumites, and installed a workshop air extraction fan. As noise would escape the workshop via the enclosure outlet and extraction fan, I decided to further improve the enclosure soundproofing and improve workshop acoustics.

By stapling, I lined the inside of the enclosure with sound absorbing 25mm polyester batts and modified the sound baffle. The end result, @ 1m the dusty noise was reduced from 75dB to 70dB and the noise at enclosure outlet is nothing more than a purr.

To alter the room acoustics, I decided to fix 50mm batts to the concrete slab ceiling above my combination saw and place a few batts under the body of the saw. The ceiling batts were wrapped in cheap cotton and stapled to particleboard. This noticeable reduced the harshness of the saw.
Zelk

And if you get more guests than you can handle who want to stay over for the night get some velcro and you have 2 extra beds.

Great idea with the bats, especially that on the ceiling. It would give rise to some weird questions.

Originally Posted by Waldo

And if you get more guests than you can handle who want to stay over for the night get some velcro and you have 2 extra beds.

Great idea with the bats, especially that on the ceiling. It would give rise to some weird questions.

Thanks Waldo,
I must say I like the 'padded cell' look
Zelk

I was a bit worried about a fairy wand left on the bench.

Or the Stuff-up Fairies paid a visit and forgot to take it with them.

Originally Posted by Waldo

I was a bit worried about a fairy wand left on the bench.

Or the Stuff-up Fairies paid a visit and forgot to take it with them.

Waldo,

how do you think I got the batts up on the ceiling? Can't wait to get home to put on my outfit
Zelk

G'day Zelk - great thread mate, your experiences will save me much grief!!!

I am about to purchase a dusty and like yourself am restricted to it being located in the workshop.

I think I will pirate your design (if you don't mind) but vent mine through the roof with one of those whirlybird things.

regards
Anthony