Oneida Ultimate Dust Deputy for CT36 and Drywall dust?

LDBecker

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May 12, 2011
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Hi - I looked briefly and didn't see mention of this... I have to do the occasional bunch of drywall work and I'm concerned that when using my nice CT36 I'll clog it up. I had considered the Auto Clean version of it to do the drywall work, but couldn't see that it would be worth it for the amount I do. The Dust Deputy came to mind as a way to keep the dust from clogging up the bags and filter on the CT36. I BELIEVE that Oneida has mitigated the static problem that damaged some Festool vacs in the past.
Does this seem like a good solution for sanding drywall dust and preserving my CT36?

Thanks!

Larry
 
I will say at the outset that I do not have this combination of equipment, though I did research it (for wood sanding, not plaster dust).

I was led to understand that the dust deputy will trap small particles, chips and shavings, but not so much dust.

On my understanding, I would think most of your fine plaster dust will end up in the CT26 in any case, though I'd be happy to hear that I was wrong on my understanding of this.
 
For occasional use you will be fine using the dust deputy with your CT 36. These are trade tools after all and are more than capable of dealing with a bit of dry wall dust.
I have used my dust deputy and midi for dry wall sanding and never had a problem. depending on how much you are doing just check the filter from time to time.
 
I suspect more of the finer dust will end up in the bag not the dust deputy because the particles are much finer.  I would be interested in the results if you're willing to run a test.

I have found that when doing a lot of drywall sanding i needed to replace the bag and the filter much sooner than i needed to otherwise.  I have also found that the CT SYS struggles at the task which may be the result of the small surface area of the bag not being able to breathe enough thus getting plugged up more quickly. My unit would go into thermal overload quickly and only restore to normal operation when the filter was also replaced.  My MIDI and 26 seem to be up to the drywall sanding task much better.

Sent from my iPhone using Tapatalk
 
DB10 said:
For occasional use you will be fine using the dust deputy with your CT 36. These are trade tools after all and are more than capable of dealing with a bit of dry wall dust.
I have used my dust deputy and midi for dry wall sanding and never had a problem. depending on how much you are doing just check the filter from time to time.
I have an older Porter Cable vacuum and I found that the bags clogged and the filter was often clogged as well. It has a pull-out thing that rakes across the main filter to help unclog it. My concerns were based on using that's older vacuum, which PC sold with their old drywall sander, I believe.
Anyway, I ordered the Oneida DD system to try out- it should be here Monday.
 
Dust from sanding drywall is nasty, especially as the fresh surface of the cement from the inside might still be a bit reactive with moisture (being hygroscopic) adhering to other particles and the bag itself.

So it certainly is a good idea to use an additional cyclone to stop it from reaching the filter - even if separation wouldn't be perfect every bit helps.

Just make sure that you maintain high air speed, using big hoses and the vac at maximum is a good plan. In case you feel that the suction is to high at the sander, or the sander blocking the airflow to much, a side channel (letting in air, reducing the suction on the sander) before the cyclone will be better than turning the vac down as it'll maintain high air speed (thus good separation) in the cylone.
 
Hi [member=11424]LDBecker[/member]

I have a CT26 with the UDD.

Festool do not condone the use of any cyclone interceptor as there is a chance that static from the additional kit can damage the CT.

Oneida have put a lot of work into the UDD to ensure that there is minimal risk of static build up but you will still void your Festool warranty if you use one. My CT is 5 years old. It spent 2 years with the old (no anti static precautions) DD and 2 years with the new UDD. I have no warranty to void !

The UDD does trap the majority of the dust. I make a point of changing my CT bag once a year. By that time the bag will have about a cup of dust inside and the fabric of the bag is starting to discolour due to fine dust. My experience in the year that I had no DD was that I needed to change bags on average once a month as they would be full and the outside would be more discoloured than I experience now. I have not had to change my main filter yet.

The UDD allows you to use ordinary plastic garbage bags to catch the intercepted dust and debris. They are easy to change and there is very little risk of dust going everywhere.

Anyone using any form of cyclone on their CT must shoulder the risk and responsibility if their CT is damaged in any way.

Peter
 
I have a Fein with DD cyclone that I use in the shop.  For dirty work, like drywall, I have an old monster Craftsman.  Both have identical CleanStream filters in them.  A couple years ago I had to do some significant drywall work due to a leaking dishwasher.  I was using one of those sanding devices that attaches to the vac to try and keep the work area as clean as possible.  The Craftsman vac would noticeably lose suction after about an hour of sanding to the point it really wasn't helping.  I would have to go bang out the filter to get back to reasonable function.  I finally hacked the DD onto the Craftsman vac.  It was a pain in the butt to move around because of the hacky way I connected it, but I worked the rest of the day (3 hrs or so) without cleaning the filter.  It wasn't clogged, but I banged it out anyway at the end of the day.  The next day I sanded the thinner 2nd coat and spent about 3.5 hrs. sanding without the filter being clogged.  My best guess is that it decreased the amount of fine dust in the filter by a factor of 10 or more.  There was almost nothing in the vac itself as everything that got past the cyclone was fine enough to wind up in the filter.  Something I typically see with the Fein in the shop also.
 
In my case I am not using the UDD which I recently bought from ToolNut with my CT-36.
I have installed the UDD more or less fixed and have it connected to the whole house central vac system.
The power unit there is a NuTone 1.5HP VX550C HEPA unit which has its own cyclone separator built in.
That unit is mounted out in the garage and so all the noise and the exhaust is out in the garage which is
nice not to have to listen to the sound from even a CT vacuum which are pretty darn quiet compared to
most other vacs.

For grounding I ran a length of braided ground strap from the UDD directly to the grounded metal electrical
box nearby. So the UDD is grounded and that is where all the static is generated at the cyclone. Since installing
it the other day I have used it twice and no more static, it's working great.
 
LDBecker said:
Hi - I looked briefly and didn't see mention of this... I have to do the occasional bunch of drywall work and I'm concerned that when using my nice CT36 I'll clog it up. I had considered the Auto Clean version of it to do the drywall work, but couldn't see that it would be worth it for the amount I do. The Dust Deputy came to mind as a way to keep the dust from clogging up the bags and filter on the CT36. I BELIEVE that Oneida has mitigated the static problem that damaged some Festool vacs in the past.
Does this seem like a good solution for sanding drywall dust and preserving my CT36?

Thanks!

Larry
  I use a UDD with my CT-36 Auto. I've used that same UDD with my CT-26 and my now gone CT-22.  Never had an issue with any of them, but Oneida did send an upgrade kit for Static transfer/grounding a few years ago.
Much of the drywall dust makes it into the Cyclone and stays there, versus getting all the way into the Vac's bag as Peter P noted with his experience using the same set-up on his CT-26. You'll love it.... [thumbs up]
 
Peter Parfitt said:
Hi [member=11424]LDBecker[/member]

I have a CT26 with the UDD.

Festool do not condone the use of any cyclone interceptor as there is a chance that static from the additional kit can damage the CT.

Oneida have put a lot of work into the UDD to ensure that there is minimal risk of static build up but you will still void your Festool warranty if you use one. My CT is 5 years old. It spent 2 years with the old (no anti static precautions) DD and 2 years with the new UDD. I have no warranty to void !

The UDD does trap the majority of the dust. I make a point of changing my CT bag once a year. By that time the bag will have about a cup of dust inside and the fabric of the bag is starting to discolour due to fine dust. My experience in the year that I had no DD was that I needed to change bags on average once a month as they would be full and the outside would be more discoloured than I experience now. I have not had to change my main filter yet.

The UDD allows you to use ordinary plastic garbage bags to catch the intercepted dust and debris. They are easy to change and there is very little risk of dust going everywhere.

Anyone using any form of cyclone on their CT must shoulder the risk and responsibility if their CT is damaged in any way.

Peter

Thank you, Peter, Bob D, leakyroof, JaySt. Peter and others who chimed in - I ordered the Oneida UDD and it should be here Monday. I had such problems with my old Porter Cable Italian-made vacuum and drywall dust. The little lever that you pull to rake over the main filter helped a bit, but not that much. I have it dedicated to my router table and smaller machines in that area of my shop. It does have tool-start on it, so it is helpful. My CT36 is used for all my Festool stuff, including my Kapex (with larger hose), and I am anxious to get good use out of it for years to come.

I AM mindful of the possible warranty issues, and if I do damage it, I'll let Festool know what I did and just pay the repair... Festool has been REALLY kind to me - even fixing my Domino 500 LONG out of warranty for free - I appreciate them as a company and gladly support them.

I'll report back when I get the thing put together and installed.

Thanks again!

Larry
 
Hi Larry

I am delighted that Festool have looked after you. You will like the UDD but I am still amazed that Festool do not make (or market) one themselves - it is not rocket science and there is little risk of patent infringement.

Peter
 
As a side note, I have read of people keeping two filters around for their CT vacs with one dedicated for use when sanding drywall.
 
That's not necessary with the dust deputy. I've emptied the bin on mine about five times so far. There's maybe a half cup of of dust in the bag and a very light coating of dust on the filter.

I'd estimate that in the last 8 months I otherwise would have had to clean the filter about twenty times, and in that time frame I may have also needed to buy another filter. The DD has already paid for itself and it'll probably be years before I need to replace the bag or filter.

 
mopo said:
That's not necessary with the dust deputy. I've emptied the bin on mine about five times so far. There's maybe a half cup of of dust in the bag and a very light coating of dust on the filter.

I'd estimate that in the last 8 months I otherwise would have had to clean the filter about twenty times, and in that time frame I may have also needed to buy another filter. The DD has already paid for itself and it'll probably be years before I need to replace the bag or filter.

I empty my UDD at least once a month and still only get a cup full of tish in the CT bag at the end of a year.

Peter
 
I received (from Amazon 'cause I had a gift card...) the Ultimate Dust Deputy and put it right to work. It seems to be working quite well. I can see no white dust making its way into the bag. I am pleased with the purchase... thanks all for the advice!
 
My dust deputy does an excellent job capturing joint compound sanding dust. Very little gets by it, maybe a tablespoon per 4 gallons of dust. I clean my shop vac hepa filter on ocassion just to keep it efficient.
 
So... reporting back after using the Ultimate Dust Deputy with my CT-36 a bit - I'm pleased. It does indeed collect virtually everything in the plastic bag, and I don't see anything in the vacuum's bag or on the filter. I've done a fair amount of drywall work with it, as well as some general sanding and cutting - and it seems like a good purchase. I see no noticeable loss of suction - though on that I defer to Peter Parfitt's wonderful testing on it showing a slight loss.

I DID experience a significant loss of suction at one point and immediately thought I had damaged something... no, I had just sucked something big in the hose and had it stuck in there causing an almost complete blockage. Once cleared, all was fine.

I was at a Festool Roadshow yesterday and, when asking about the upcoming Planex Easy, mentioned that I was using the UDD on my CT-36 - the Festool employee was not pleased and cautioned me about it. Despite Oneida's work on the UDD, I don't think Festool is too happy about it being used on their dust extractors. I have a couple of big drywall tasks ahead (finish the kitchen, and two bathroom remodels), and some truly obnoxious popcorn ceilings in my house that need to be dealt with - hence the Planex interest. The cost differential between the Planex Easy and the regular Planex would push me into going with the more capable current Planex, I think...

I DO find the UDD/CT-36 combination obnoxiously big, and it makes moving the CT-36 down even one stair level a drama-inducing event; nonetheless, I am pleased with the purchase, would recommend it to others, and will continue to use it. If I DO have issues with it in my remaining two years of warranty, I will fess up to Festool and pay for the repair.

Larry
 
If your doing site work the ct36 and udd are not efficient to set up.  It takes multiple trips to set up in the house.  If it were me I would look at the Fein Autoclean or the Bosch.  They both have the same motor but the Fein will hold Systainers.  I'm going to sell my Ct36 and buy the Fein. 
 
I am wondering could you just use a plane DD vs UDD for the occasions that you need to sand or pick up harsher items?  I ask because i really dont want to commit the 250 cost for the UDD vs the 100.  I am remodeling my house and am sucking up tons of old plaster, mortar and what not and dont want to kill my ct26.  thanks
 
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