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Muffler for the outlet on a DC

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Forum topic by TexasAggies posted 04-08-2016 08:11 PM 757 views 0 times favorited 6 replies Add to Favorites Watch
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TexasAggies

4 posts in 294 days


04-08-2016 08:11 PM

Has anyone ever built one and would you mind sharing some tips? Did it work?

I am exhausting outside in a suburb and I think I should be a little more kind to my neighbors.

-- My products use processes known to the state of California to dissect trees. -- http://www.sawedoffwoodworks.com


6 replies so far

View bigblockyeti's profile

bigblockyeti

3668 posts in 1183 days


#1 posted 04-08-2016 09:42 PM

Grizzly has a muffler installed on the discharge for some of their cyclone dust collectors. Grizzly part number P0637039 is an 8” muffler they sell for $102, I can make no testament as to how well they work, but they’ve had them for a while and it’s unlikely they’d be selling them on their dust collectors if they didn’t do anything.

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Rentvent

148 posts in 311 days


#2 posted 04-08-2016 11:35 PM

Insulated HVAC duct from the big box store. Make a gentle curve or loop so that the noise get absorbed in the walls of the duct.

This also works for running HVAC ducts when trying to soundproof a room.

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TexasAggies

4 posts in 294 days


#3 posted 04-09-2016 12:26 AM

rent, you put the insulation on the outside of the pipe and it still works?

I’ll check out grizzly too. I have their jointer. Works great.

BTW, I’ve been lurking this site for a long time and learning a ton. I figured it was time to create an account and give back some.

-- My products use processes known to the state of California to dissect trees. -- http://www.sawedoffwoodworks.com

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Rentvent

148 posts in 311 days


#4 posted 04-09-2016 01:24 AM



rent, you put the insulation on the outside of the pipe and it still works?
- TexasAggies

Replace the rigid exit pipe with flexible insulated HVAC duct. The HVAC stuff has a core that is similar to flexible dust collector hoses. Some of the noise will get absorbed at any bend.

View JeffP's profile

JeffP

573 posts in 854 days


#5 posted 04-09-2016 11:18 AM

I built one out of 7 acres of woods.

Works great.

No loss of suction.

-- Last week I finally got my $*i# together. Unfortunately, it was in my shop, so I will probably never find it again.

View JBrow's profile

JBrow

818 posts in 382 days


#6 posted 04-09-2016 07:37 PM

TexasAggies,

I have not built an outdoor exhaust muffler but have an idea. I recall buying a Homasote 4’ x 8’ x ½” board for a dartboard project and it was not very expensive. It reminded me of similar looking material sometimes found inside HVAC rectangular duct work. I think back in the day it was sometimes used as sheathing on the outside of homes. I purchased it at a lumber yard and think it has sound absorbing properties.

The idea is to construct a square or rectangular duct with a 90 degree bend exhausting downward from the Homasote. Then transition from the dust collector exhaust pipe into the Homasote constructed elbow mounted outdoors. The Homasote elbow would then carry exhaust air to daylight with no metal piping. The Homasote board I used had no structural properties, so it would have to be constructed in a structural housing. This housing would afford the opportunity to add some sound deadening insulation on the outside of the Homasote between the Homasote and the structural support housing.

If interested, check with lumber yards (home centers may or may not carry it). They should be familiar with this product. Also the Homasote website is:

http://www.homasote.com/products

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