Residual Dust in Anti Static Hose

[iamnothim]

Hi ya'll

For the last couple mounts I began to have a significant amount of dust spill on the floor when I decoupled the 27mm antistatic hose from my CT26.  This dust spills everywhere.  When I vacuumed it up it would build up in the connector again.  I have to be very careful removing the hose, taking it to a trash can, and shaking out the dust.  Because it sticks a bit,  I almost always have a mess in front of the CT26 when I pull the hose.

For the life of me, it didn't do before or this with any of the DC's, static and non-static hoses, I've owned.  This is a recent development.  I tested my grey, non-static 36mm hose and it did not happen.  It happens with a brand new bag. 

I called support and they said they hadn't heard of the problem and to cup my hand over the hose while running the DC before turning it off and disconnecting the hose.  I told them this did nothing.  Their response was "you are always going to have some dust and to carefully remove the hose and take it to the trash can."  I'm not talking about a little dust.  It's a good sized pile whether using my TS55REQ,  Domino, or vacuuming the floor.  I suspect something with the anti-static.

Any suggestions will be appreciated.

All-the-best,

Luke

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[JCLP]

I get the same thing happening as well. I now disconnect the hose outside when I am at clients. One time I even put it in large bag as I had my wife's car. If you find a solution please share.

 

[dalep]

An amount of sawdust is normal on the smaller hose, the CT end is constructed differently to the larger hoses and has a gap / ridge that is not present on the larger hoses, this causes a ring of dust to get trapped and drop out when tipped up.

Regards

Dale

 

[Tom the Remodeler]

I have found that removing the hose and tipping it slightly with the CT running eliminates this problem.

 

[iamnothim]

I'm not sure why I didn't do this before....
I started with a CT-Midi.  It's now the house vacuum.  (I love the Turbo Head for carpets.)

The shop (aka 3 car garage) needed vacuuming so I grabbed the 27mm anti-static hose from the Midi and proceeded to vacuum the entire garage.  Below are pictures of debris but there was easily 3 times as much pictured.

Drum roll.  No residual dust!  Just as I had remembered.  Something has gone wrong with the hose that came with the CT26.  It's about a year old.  The Midi is probably 2 1/2 years old.  Not to mention the CT-Midi hose has a 90 degree connector.

Again.  This only started happening to the stock CT-26 hose recently.  Prior to a couple months there was no debris.

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[leakyroof]

There are old threads on this, you're not the first user to run into it. One person even adds a bead of silicone to the inside of the hose to streamline the air flow at that ridge so the dust doesn't build up . 
I do the following, cause it's easy...... [big grin] [big grin]
: Simply put the vac in Manual Mode, and pull the hose away from the vac while it's running for a second or two. All that dust trapped at the ridge tends to get pulled out right away and you're done.

 

[tjbnwi]

I remove the 27 mm hose by pulling it part way out and tilting (by pushing down gently on the cuff) the top of the cuff clear of the port (1/4-1/2"), turn the CT on for a few seconds and it will evacuate the debris into the CT.

Tom

 

[iamnothim]

I appreciate the workarounds.  Sure, I can do that but this is a Festool product and I didnt pay for workarounds. 

Something broke.
Points

A) The hose in question (anti static) used to work now it doesn't.
B) An older identical, 27mm, anti static hose works fine.  Dust doesn't dump when you simply pull the hose out. 
C) This doesn't happen with a 32mm gray (non-anti static) hose.

If you look at the picture you can see that dust coats the fixture.  I'm guessing that that anti static became the opposite a static collector. 

There's no voodoo here, it's a part that broke.

 

[tjbnwi]

Mine has always collected dust at the step down in the cuff. That is why I remove them the way I do. I considered it normal with the diameter change.

Tom

 

[iamnothim]

I'm guessing that my CT is no longer HEPA compliant when it dumps a cup of dust on the floor.

 

[iamnothim]

Mine has always collected dust at the step down in the cuff. That is why I remove them the way I do. I considered it normal with the diameter change.

Tom

Thanks Tom
Well.  The one in the video doesn't. Never did.  Works as expected. 
Something is wrong.  With your hose too. 

Luke

 

[PreferrablyWood]

I've used my Midi for household cleaning and mostly for sanding painted surfaces, I feel good have I've given it a good wash through with a hose. I don't notice a lot of dust coming out of the hose when I remove it . Which I don't often have a need to do anyway..

It seems an odd thing that this problem is starting after a long period when you had smooth sailing. Have you changed your usage, different types of wood, higher volume?

 

[dalep]

[member=28483]iamnothim[/member]

Can you post a pic of both CT ends of the 2 27mm side by side please

Thanks

Dale

 

[tjbnwi]

I have no problems with the 36 mm hose AS hose. The Cuff is the same design as the one in the picture of the gray hose.

Have no issues with the Mini/Midi hoses, different style cuff.

The issue with the 27 mm has been there on mine since day one. My guess is there is air flow in the shape of an eddy current in that area due to the cuff design. Packs the area on the cuff, debris falls out when the hose is removed.

Has no affect on the CT's HEPA rating.

Tom

 

[Tom the Remodeler]

I have no problems with the 36 mm hose AS hose. The Cuff is the same design as the one in the picture of the gray hose.

Have no issues with the Mini/Midi hoses, different style cuff.

The issue with the 27 mm has been there on mine since day one. My guess is there is air flow in the shape of an eddy current in that area due to the cuff design. Packs the area on the cuff, debris falls out when the hose is removed.

Has no affect on the CT's HEPA rating.

Tom

Agreed, my 27mm hoses have exhibited this behavior for as long as I can remember (~9 years now?). My assessment is that it is not broken, it's the nature of the hose. Just run the vac on manual (as suggested above) for a few seconds as you pull the dust hose off the vac. It's at its worst with REALLY fine dust, less so with larger chips.

The HEPA certification deals specifically with the seal between the motor and the filter. It is up to the tradesperson to operate their tool in a safe manner to avoid Lead contamination.

 

[ear3]

Same issue on my 27mm AS hose.  I thought it was just the way it was.

 

[Laminator]

I do what Tom does only I use the tool end of the hose to hit the connector while its tilted down and the vac is running.  Its a habit I started years ago when I had finished cleaning on a job and removed the hose only to make another mess.