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Forum topic by dalec posted 12-15-2009 05:26 AM 1140 views 0 times favorited 9 replies Add to Favorites Watch
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dalec

613 posts in 3354 days


12-15-2009 05:26 AM

I recently bought a new random orbit sander and thought why not buy a hose to use with the hose adaptor that comes with the sander. Should reduce the amount of saw dust floating in the shop.

As it turned out, hooking the hose to my small shop vac, the hose begins to whistle this high pitched loud noise that gets me reaching for hearing protection.

Is there some types of vacs that don’t work well with small diameter dust hoses? Those of you who use dust collection with your ROS, have you experienced this and if you were able to solve it, what did you do to fix it?

Dalec


9 replies so far

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brunob

2277 posts in 3635 days


#1 posted 12-15-2009 05:35 AM

I believe it’s the hose and not the vacuum. You need to reduce the velocity of the air coming through the hose. I’m not sure how you could do this other than putting a few holes in the hose. There is a toy the produces the sound of a Caribou by blowing through a smaller version of this type of hose.

-- Bruce from Central New York...now, if you'll pardon me, I have some sawdust to make.

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dalec

613 posts in 3354 days


#2 posted 12-15-2009 05:46 AM

Bruce,

The sound is pretty irritating. I suppose it might be music to the caribou’s ear.

Maybe drill some 1/4” holes into the hose until the sound goes away may be one approach. Certainly, it is not very pleasant using the hose as is.

Thanks for your thoughts.

Dalec

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Bluepine38

3341 posts in 2550 days


#3 posted 12-15-2009 06:35 AM

You might try using a pvc pipe y to let a little more air to get to the shop vac, it would be easier than trying
to find a hose y in that small a size

-- As ever, Gus-the 77 yr young apprentice carpenter

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dalec

613 posts in 3354 days


#4 posted 12-15-2009 07:35 AM

Gus,

I will give this a try. Hope I can easily find a “Y” the right size for this purpose.

Dalec

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GMman

3902 posts in 3163 days


#5 posted 12-15-2009 02:38 PM

On your hose adapter put some black tape to cover 1/4 to 1/2 to make the outlet smaller so less air will go in the hose.

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dalec

613 posts in 3354 days


#6 posted 12-15-2009 05:19 PM

GMman,

I have a few suggestions to try out. I will go with the least invasive and work up from there until I get it fixed.

Appreciate the suggestions. One of the nice things about LJ’s.

Dalec

View Dchip's profile

Dchip

270 posts in 2718 days


#7 posted 03-11-2010 07:36 PM

Hi Dalec,

I recently have been having the same problem, any success in fixing this (preferably without drilling into the hose)? It didnt happen until I attached the upgraded ridgid hose.

Thanks
Dan

-- Dan Chiappetta, NYC, http://www.9x7woodworks.com

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dalec

613 posts in 3354 days


#8 posted 03-11-2010 08:40 PM

Hi Dan,

I have been an old smaller sized shop vac (over ten years) with the smaller hose. Shortly after posting this inquiry, my small shop vac called it quits. I have been busy doing other things, so only on getting your inquiry I tried using my big shop vac with the small hose. I found a plastic ring that allows more outside air into the hose. Still whistling regardless of the outside air cover is closed, partially or fully open. The opening is around 1/2 in diameter. Afraid opening it much more will reduce dust collection pressure at the tools end of the hose.

As an after-thought, I just tried using my bigger vac and hose (2” ID) with a reducer (w/o connecting to the orbit sander hose adapter. Got whistling, but once I held the reducer tight to the hose adapter on the sander, whistling went away and still got good suction. Maybe all I need to do is to find an adapter that will allow the larger hose to reduce down and connect to the hose adapter on the sander. Some progress. Thanks for bringing me back to this issue.

Best of luck on your’s.

Dalec

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Dchip

270 posts in 2718 days


#9 posted 03-11-2010 09:55 PM

Thanks for the quick and detailed response Dalec. I think our problems are actually slightly different since mine has nothing to do with attachments, just the hose upgrade. I haven’t really had the time to do some real fiddling with the hose, think this is in order. Thanks again.
Dan

-- Dan Chiappetta, NYC, http://www.9x7woodworks.com

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