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Forum topic by richardchaos posted 12-05-2017 12:30 PM 547 views 0 times favorited 7 replies Add to Favorites Watch
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richardchaos

583 posts in 495 days


12-05-2017 12:30 PM

I have a Cobalt Diaphragm air compressor. Its very loud and annoying when it goes off. I was thinking of making a BOX for it in the corner of my shop with some sort of noise dampening material on the inside of this box.

Dos anyone know what material I could use that is effective and CHEAP?

-- “In a time of universal deceit, telling the truth is a revolutionary act.” ― George Orwell


7 replies so far

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woodbutcherbynight

5545 posts in 2524 days


#1 posted 12-06-2017 03:22 AM

We tried this at a mechanics shop I worked at. Used various types of insulation, sound barrier stuff etc etc. Enclosed it nice and tight like the manager told us. Burned the compressor out from overheating, as in no ventilation. So two options. Do so but make sure you have fresh air supply to this box. Or make a box outside and run a pipe through to the inside. Insuring you have your box vented.

I have mine this way with a relay that turns a fan on when the compressor fires off drawing air across the box and to the outside. Used a layer of regular insulation and some scrap 3/4 foam board between the walls. Both walls are 3/4 plywood thick. Yes I can hear it but nothing like sitting on top of it in my echo chamber. All the air lines are tucked away out of sight and mind with ends coming out in various places.

-- Live to tell the stories, they sound better that way.

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shipwright

8060 posts in 2913 days


#2 posted 12-06-2017 04:24 AM

Check out California Air products. I switched to one of their compressors and now would have nothing else. They are soooooo quiet!
http://www.californiaairtools.com

-- Paul M ..............the early bird may get the worm but it’s the second mouse that gets the cheese! http://thecanadianschooloffrenchmarquetry.com/

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MrRon

4986 posts in 3358 days


#3 posted 12-06-2017 06:43 PM

I think the sound absorbing material that is used in loudspeaker cabinets would work well. I’m not sure what the material is; shouldn’t be too difficult to find out from the internet.

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JoeinGa

7739 posts in 2122 days


#4 posted 12-06-2017 07:13 PM

How about build a small enclosure on the outside of your shop. Here’s what I did …

More details at this link http://lumberjocks.com/JoeinGa/blog/42595

-- Perform A Random Act Of Kindness Today ... Pay It Forward

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richardchaos

583 posts in 495 days


#5 posted 12-06-2017 08:04 PM

Thats a good idea I am considering it. Someone told me a cheap insulation is carpet padding


How about build a small enclosure on the outside of your shop. Here s what I did …

More details at this link http://lumberjocks.com/JoeinGa/blog/42595

- JoeinGa


-- “In a time of universal deceit, telling the truth is a revolutionary act.” ― George Orwell

View FirehouseWoodworking's profile

FirehouseWoodworking

716 posts in 3388 days


#6 posted 12-07-2017 02:22 AM

A good and “inexpensive” material to use for noise abatement in a compressor cabinet/room is old fashioned egg cartons. I had my compressor closet in my previous shop lined with them and the noise difference was amazing. I also used them to abate the noise of the small vacuum that I have under my router table these last 40 years!

The best ones to use are the grey ones made from paper and cardboard pulp. You just use the carton bottoms and cut off the tops.

If your are friends with a cook at a restaurant, you might be able to land some of the egg flats that hold two dozen eggs.

Cheers!

-- Dave; Lansing, Kansas

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BHZ

14 posts in 1093 days


#7 posted 12-07-2017 05:25 PM

I used acoustic ceiling tiles (for hanging ceilings 2’ X 4’) and that seems to work well.

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