Screaming Router - How do I make it quieter

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Forum topic by Zuki posted 07-25-2009 01:06 PM 9015 views 0 times favorited 12 replies Add to Favorites Watch
View Zuki's profile


1404 posts in 5051 days

07-25-2009 01:06 PM

Topic tags/keywords: zuki screaming router

He all . . .

I have been doing a little work with my router which is mounted in a table. It is a DW616, the table is aluminum. Here is a pick.

The problem is that it screams like a banshee. I do not believe it is broken. There is a ever so slight movement in-and-out on the shaft, but nothing side to side. I have not abused it or used it so much that the bearing would be shot. There is no play\distortions in the wood that I route.

I do not find the scream bad as I am wearing hearing protection; however DW finds it loud in the house which is about 20 feet away.

Right now I’m using T&G bits to make some wainscoting.

Two questions . . . well maybe three:
1) Is there anyway I can soundproof my router table?
2) Are there routers out there with lower decibels? Where would I find the dbs for mine?
3) Is my router broken? How can I tell?

Thoughts ? Opinions ? Musings ?

-- BLOG -

12 replies so far

View CanadaJeff's profile


207 posts in 4583 days

#1 posted 07-25-2009 02:02 PM

I agree with Dave, see if you can create an enclosure for the router. Thats probably about the easiest way to reduce the noise.

View Don Butler's profile

Don Butler

1092 posts in 4369 days

#2 posted 07-25-2009 02:11 PM

All of my routers, with the one exception, scream like banshees.

20,000 rpm or so (DeWalt gives the no load speed as 24,500) is very fast and no matter which bit is installed, there are things in the motor case flying about at great speed.

One effect that may be at work is the interface between the rotor and the stator. If you look at a siren (the kind they use to call fireman to the station) there is a rotor inside the stator case and the spacing of the slots in each is responsible for the ear shattering wail. Perhaps that effect is particularly strong in that certain router.

I agree with Dave. Try enclosing and insulating the base. However, don’t forget to provide a way for air cooling and chip collection. The muffling of the router will be limited by those two considerations.

Oh yes, the one router I have that isn’t an ear-buster?

Its the Dremel rotary in the cute little plastic router adaptation they sell. Its not a serious routor, but occasionally useful. I saw The Norm using one for a decorative effect and, naturally, I had to have it. (Please refer to the posts on tool addicition)


-- No trees were damaged in posting this message, but thousands of electrons were seriously inconvenienced.

View Splinterman's profile


23074 posts in 4335 days

#3 posted 07-25-2009 02:17 PM

Hey Zuki,
Mount the router on an enclosed heavy wood mobile cabinet and incorporate a dust extraction system adding some drawers or space for all your router bits.

View Craftsman on the lake's profile

Craftsman on the lake

3638 posts in 4411 days

#4 posted 07-25-2009 02:49 PM

If it didn’t scream before and does now it’s probably a bearing. They screech when they’re getting old.

-- The smell of wood, coffee in the cup, the wife let's me do my thing, the lake is peaceful.

View Roper's profile


1389 posts in 4686 days

#5 posted 07-25-2009 03:45 PM

if your using t&g bits try taking a few smaller passes and getting some of the waste wood out of the way, then on your final pass go all the way to the bearing guide.

-- Roper - Master of sawdust-

View Kent Shepherd's profile

Kent Shepherd

2718 posts in 4260 days

#6 posted 07-25-2009 04:42 PM

Ear plugs!

For good replies, see above.


View Dan'um Style's profile

Dan'um Style

14188 posts in 4956 days

#7 posted 07-25-2009 05:42 PM

duck tape and cardboard

-- keeping myself entertained ... Humor and fun lubricate the brain

View BeachedBones's profile


201 posts in 4375 days

#8 posted 07-26-2009 04:02 PM

Plant a hedge or built a fence between shop and house. They will decrease the noise coming from the shop, and also decrease the noise coming from the house. Lol

-- You know.... I think that old wood needs to be furniture.

View kolwdwrkr's profile


2824 posts in 4564 days

#9 posted 07-26-2009 05:09 PM

If it’s variable speed turn it down. You need to run certain RPMs for certain bits. The larger the bit the slower the speed. That will help reduce the noise.

-- ~ Inspiring those who inspire me ~

View a1Jim's profile


118153 posts in 4551 days

#10 posted 07-26-2009 05:14 PM

View Zuki's profile


1404 posts in 5051 days

#11 posted 07-29-2009 12:50 AM

Tks for all the replies. The consensus is to enclose the base. Im not going to rebuild the entire cabinet, although that would allow for maximum dampening, but instead I used 1” styro cut to size for both the open ends and the sides. I have left gaps for ventilation and the dust extraction is taken from behind the bit.

The simplest solution is to get DW to wear ear plugs . . . but dat aint gonna happen. :-)

Here are some pics. Does it work . . . not sure . . . have not run it yet. But I will let you know.

I’m using a high tech piece of orange string to to keep it all together. That may change when I fire it up.

-- BLOG -

View Mark Shymanski's profile

Mark Shymanski

5623 posts in 4686 days

#12 posted 07-29-2009 12:54 AM

A bit late on this one but could the aluminum table be acting as an amplifier; kind of like the sounding board of a guitar?

-- "Checking for square? What madness is this! The cabinet is square because I will it to be so!" Jeremy Greiner LJ Topic#20953 2011 Feb 2

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