Author Topic: Dust extractor question  (Read 4435 times)

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Offline Fed

  • Posts: 6
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Re: Dust extractor question
« Reply #30 on: March 19, 2017, 08:45 AM »
Thanks guys for giving me so much to consider.  I had read until my eyes hurt, and thought I had it narrowed down, but now it looks like I was on the wrong track. 

What I had not considered was the high cfm needed, the cfm decrease by the cyclone, and the need for more than one vent on the saw to actually capture the dust from the saw.

It seems that these considerations rule out the Festool specifically, and vacuums in general. Correct?

As far as a real DC system, do they come with Hepa? Of not, are something like the two below acceptable for Ipe? The first one mentions "The B|flux:1 comes standard with a 1 micron canister providing filtration of 99.97% of particles between 0.2 to 2 microns" which is similar to the Hepa requirements.


http://www.atlas-machinery.com/Laguna/Collectors/MDCBF1110C1M
http://www.atlas-machinery.com/1hp-dust-collector-with-short-canister-650cfm/

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Offline leakyroof

  • Posts: 1958
Re: Dust extractor question
« Reply #31 on: March 19, 2017, 09:02 AM »
Looks like a nice 1 HP unit. With this type of dust collection and that 9" impeller, keep your hose length going to your Saw short and a straight shot to help prevent CFM losses.
Modify your saw dust collection around your blade as needed once you get the DC unit installed and going and have cut wood for a bit to see where you're falling short on dust capture .
Not as many Sanders as PA Floor guy.....

Offline TylerC

  • Festool USA Employee
    FOG Administrator
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  • Posts: 986
Re: Dust extractor question
« Reply #32 on: March 19, 2017, 10:19 PM »
@SRSemenza - thanks for the breakdown.  Obviously the motor/turbine was changed when the cfm's on mini/midi were upped from 99 to 137.

Do you know if the turbine has been changed again now that rating is 130 cfm ?

If enlarging the first few feet of hose's diameter decreased the performance - then why do it at all?  Why not just keep the 27mm orig. hose and the better flow ?[scratch chin]


@TylerC  - can you shed any light on the subject and min/midi's eveloution ?

I believe that it's unchanged at 130 CFM, but I'm going to check with our product manager to confirm and get a little more insight.

I got a bit more information. The Mini and Midi were originally 99 CFM. When they were redesigned, they become 130 CFM. However, they were incorrectly published as 137, but those were actually 130.

Offline antss

  • Posts: 1297
Re: Dust extractor question
« Reply #33 on: March 20, 2017, 08:37 AM »
Thanks for the skinny Tyler.

Two years of publishing the wrong spex though ?   [eek]

Offline antss

  • Posts: 1297
Re: Dust extractor question
« Reply #34 on: March 20, 2017, 09:30 AM »
@Fed - asking whether a real dust collector comes with HEPA is loaded question.

It assumes that HEPA filtering makes a real dust collector, and many people feel that's not the case - or even possible.

A HEPA filter is an option and like any other "option" whether a machine comes with one is really dependent on marketing.  Speaking of which , be careful with Laguna's.  Their pitch is expertly crafted to lead masses into thinking their filter is really great , maybe even HEPA. However their details - the 99.97% @  .2 -2.0 micron range is where the deal falls apart. 2.0 mic is pretty big when we're talking turkey about fine filtering. It's adequate in general and for most people - but it ain't HEPA.   99.97% @ .3 mic is the standard in the U.S.  99.97 @ .5 or 1 or 2 micron is not HEPA !  Usually when somebody gives you a range like, .2. - 2 micron they're playing games to mask their product's shortcomings.

Besides;  the bigger factor is really filter efficiency, not particulate size.  Meaning , how many sq. inches or feet of fabric area does your filter have ?


If you're looking at small single stages you really should consider this with a cartridge filter from Wynn.  It may not be sexy like a Laguna, but it's got twice the power and costs half as much including the filter below.  Less, if you catch a sale.

http://t.harborfreight.com/2-hp-industrial-5-micron-dust-collector-97869.html?utm_referrer=https%3A%2F%2Fwww.google.com%2F

And

https://wynnenv.com/woodworking-filters/

Also think about where the inlet is on your collector. That top mount of the Laguna's isn't very convenient for most shops.  The Generals location is preferred by most people.





Offline Fed

  • Posts: 6
  • Nothing is easy
Re: Dust extractor question
« Reply #35 on: March 20, 2017, 12:17 PM »
I did not mean to ask a loaded question.  What i meant by a "real DC" is that it was a dedicated unit, not a vacuum.  And my questions was rather whether such a dedicated unit comes with Hepa?  My assumption was that it did not, and could not, as I cannot find one.

I guess, my real question is whether a dedicated DC is good enough for Ipe, and if I do in fact need Hepa.

As far as your suggestions, I did come across both those, and they look great.  But again, is it good enough for Ipe.  Also, I cannot find it online in Canada at all.  Any idea if it is sold in Canada?

Offline antss

  • Posts: 1297
Re: Dust extractor question
« Reply #36 on: March 20, 2017, 09:42 PM »
Dedicated dust collector should be just fine for your saw and ipe with a blade guard that has a port for  a vac line.

I wouldn't get overly concerned with HEPA.

If you're really worried, wear one of these along with the dust collection set up on the saw:
http://www.highlandwoodworking.com/elipse-p100-dust-mask.aspx

Harbor Freight delivers to Canada I believe.  I'm not sure about the added cost though.  Wynn definitely delivers to Canada.

Remember to budget in all the flexible hoses, fittings , clamps , remote control,  ect.... that you'll need to hook all this stuff up.   

Offline rst

  • Posts: 1537
Re: Dust extractor question
« Reply #37 on: March 21, 2017, 07:19 AM »
Oneida sells dedicated machines with HEPA filters.  Any thing from hobby to industrial.