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See the new dust collector?
开云体育I guess Bridge City is importing a new dust collector…. not sure it’s up to the rigors of a Felder shop, but the design is such a departure from existing stuff that I found it pretty interesting. Built in VFD, Gauge to tell if the filters are dirty and a bin full indicator. If it was just 3 or 4 hp and a 7 or 8” intake….. would be very interesting.or this if the one above doesn’t work: |
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The motor is 1500W, so about 2HP, maybe good for a one man shop.? The low noise level 61dbA is amazing. James On Tue, Nov 29, 2016 at 10:04 AM, Brian Lamb blamb11@... [felder-woodworking] <felder-woodworking@...> wrote:
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On Nov 29, 2016, at 8:20 AM, James Zhu james.zhu2@... [felder-woodworking] <felder-woodworking@...> wrote:
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Here's the original specs from the manufacturer. I heard about these units early in the summer and did some looking, 100% Chinese. New design but really how good for the price. They measure filtering at?0.05mg/m?, whatever that actually coverts to in microns. On Tue, Nov 29, 2016 at 10:25 AM, Brian Lamb blamb11@... [felder-woodworking] <felder-woodworking@...> wrote:
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John Kee
JMK Services |
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开云体育I think the Harvey guy is Ben Chan and they sell a bunch of stuff direct through their website.? I was interested in the overarm saw guard as I liked the design but it wouldn't cover the 16-18" blades I work with.? Chan was pretty responsive though and seemed
OK to deal with.? Dave From: felder-woodworking@... on behalf of John Kee jmkserv@... [felder-woodworking] <felder-woodworking@...>
Sent: Tuesday, November 29, 2016 11:15 AM To: FOG Subject: Re: [felder-woodworking] See the new dust collector? ?
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Here's the original specs from the manufacturer. I heard about these units early in the summer and did some looking, 100% Chinese.
New design but really how good for the price. They measure filtering at?0.05mg/m?, whatever that actually coverts to in microns.
On Tue, Nov 29, 2016 at 10:25 AM, Brian Lamb
blamb11@... [felder-woodworking] <felder-woodworking@...> wrote:
John Kee
JMK Services
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I think it is a typo.? If it was 5 micron, I do not think the owner of bridge city would buy it because he is allergic to wood dust as mentioned in the following review of his new dust collector. James On Tue, Nov 29, 2016 at 10:21 AM, andy.giddings@... [felder-woodworking] <felder-woodworking@...> wrote:
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I read another post?. The machine sold in states comes with 5 micron filter, 1 micron is an option you can upgrade. I believe the machine sold in Europe will have 1 micron filter. James On Tue, Nov 29, 2016 at 12:16 PM, James Zhu <james.zhu2@...> wrote:
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开云体育I agree James, but in today's world when your trying to sell equipment with a high price tag don't you think that you would him at least checked what the rocket scientists in marketing department were putting out there on the web. LOL. ? John JMK Services? -------- Original message --------
From: "James Zhu james.zhu2@... [felder-woodworking]" <felder-woodworking@...> Date: 2016-11-29 12:16 PM (GMT-05:00) To: "phil_moger@... [felder-woodworking]" <felder-woodworking@...> Subject: Re: [felder-woodworking] Re: See the new dust collector? ? I think it is a typo.?
If it was 5 micron, I do not think the owner of bridge city would buy it because he is allergic to wood dust as mentioned in the following review of his new dust collector. James On Tue, Nov 29, 2016 at 10:21 AM, andy.giddings@... [felder-woodworking] <felder-woodworking@...> wrote:
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John, I was trying to figure out what exact micron is equivalent to 0.05 mg/m? filter emission rating on the Gryo air dust collector spec?. II checked Felder's RL160 spec, and its filter emission rating is 0.1?mg/m?,? This means the air coming out of Gryo air dust collector is even cleaner than Felder RL's. James On Tue, Nov 29, 2016 at 12:35 PM, John jmkserv@... [felder-woodworking] <felder-woodworking@...> wrote:
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开云体育James that sticker is on the side of my RL160, I also haven't found a direct cross from these numbers to actual filtration. Might to contact a filter manufacturer to see what they say.? John JMK Services? -------- Original message --------
From: "James Zhu james.zhu2@... [felder-woodworking]" <felder-woodworking@...> Date: 2016-12-01 9:11 AM (GMT-05:00) To: "phil_moger@... [felder-woodworking]" <felder-woodworking@...> Subject: Re: [felder-woodworking] Re: See the new dust collector? ? John, I was trying to figure out what exact micron is equivalent to 0.05 mg/m? filter emission rating on the Gryo air dust collector spec?. II checked Felder's RL160 spec, and its filter emission rating is 0.1?mg/m?,? This means the air coming out of Gryo air dust collector is even cleaner than Felder RL's. James On Tue, Nov 29, 2016 at 12:35 PM, John jmkserv@... [felder-woodworking] <felder-woodworking@...> wrote:
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I remembered there was discussion about this and found this thread on Festool Forum. The long and the short from what I read is that Felders H3 .1mg/m3 translates to HEPA filtration. See post #5 for those interested. Felder rates there filter as Class M which also says Hepa level filtration. On Thu, Dec 1, 2016 at 9:11 AM, James Zhu james.zhu2@... [felder-woodworking] <felder-woodworking@...> wrote:
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John Kee
JMK Services |
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I have no doubt that Felder RL is rated at HEPA level filtration. Festool dust extractor has 0.3 micron HEPA filter,?. So 0.05 mg/m? on Gyro Air is at least?HEPA level filtration, otherwise, they will not be able to sell it in Europe. James On Thu, Dec 1, 2016 at 10:14 AM, John Kee jmkserv@... [felder-woodworking] <felder-woodworking@
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开云体育You guys are talking apples to oranges…. the mg/m3 is “Volume”, it’s .05 milligrams per cubic meter. The other is dust particle size, microns. So it depends upon how well the unit separates the dust particle size in the airstream, and then the pass through of the filters will determine the amount in milligrams per cubic meter of air.On Dec 1, 2016, at 8:24 AM, James Zhu james.zhu2@... [felder-woodworking] <felder-woodworking@...> wrote:
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开云体育Are Euro and US HEPA standards the same?? There is always a lot of talk about filtration standards but a good quality collector with quality filters will return air that won't kill you.? As important, maybe more so, is to size the system correctly to pull
enough cfm to reduce the dust envelope that never makes it to the collector.? Get the cfm right and any spun bond, nano, hepa or singed poly felt will return better air than what you breathe in the real world.? Dave From: felder-woodworking@... on behalf of James Zhu james.zhu2@... [felder-woodworking]
Sent: Thursday, December 1, 2016 10:24 AM To: phil_moger@... [felder-woodworking] Subject: Re: [felder-woodworking] Re: See the new dust collector? ?
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I have no doubt that Felder RL is rated at HEPA level filtration.
Festool dust extractor has 0.3 micron HEPA filter,?.
So 0.05 mg/m? on Gyro Air is at least?HEPA level filtration, otherwise, they will not be able to sell it in Europe.
James
On Thu, Dec 1, 2016 at 10:14 AM, John Kee
jmkserv@... [felder-woodworking] <felder-woodworking@
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Brian we were obviously trying to find a correlation between the apples and oranges. I think if you read the Festool link you will see the connection or am I completely missing something. On Thu, Dec 1, 2016 at 10:52 AM, Brian Lamb blamb11@... [felder-woodworking] <felder-woodworking@...> wrote:
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John Kee
JMK Services |
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Yes, I emailed their director (Ben Chan) for international marketing regarding the filtration. I told him that all the cheap or junk dust collectors sold in North America come with 5 micron filter. A lot of people replaced the 5 micron filter with the 0.5 micron filter made by Wynn environmental. By having a 5 micron filter on the dust collector regardless how excellent the design/performance is, it basically puts the product inline with the cheap/junk models in terms of air filtration, huge mistake. Customer should not pay extra to upgrade the filter, a US$ 4000 dust collector should equip with HEPA filter (0.3 micron like Festool's). James On Thu, Dec 1, 2016 at 3:29 PM, Cliff rohrabacher@... [felder-woodworking] <felder-woodworking@ 5 micron filter. That's a little sloppy |
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开云体育I guess I should have continued my train of thought…. I didn’t see anything enlightening on the Festool group. I think an engineer for these dust collector companies would have to provide more info. What micron level the filters clean to is totally separate from how many milligrams per cubic meter is emitted from the DC.?Obviously the less volume is emitted the better, but i think the size of particles has some bearing on health issues too. On Dec 1, 2016, at 9:06 AM, John Kee jmkserv@... [felder-woodworking] <felder-woodworking@...> wrote:
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开云体育Brian, you’ve hit the nail on the head (as usual). Whether a filter can filter down to a certain size or not is only one half of the story. It’s the percentage efficiency that provides the other half. A filter that can filter down to 5 microns is definitely not good enough. But for filters that can filter down to 1 micron, or 0.5 microns, I’ve never seen one that has 100% efficiency. This means that the filters are not getting all of the particles down to that size.?I’m no expert, but I think that is why Felder (and others) quote amounts/volumes, rather than sizes? Warm regards, David Dr David Luckensmeyer Practice Manager Luckensmeyer Medical Pty Ltd ? and Designer and Woodworker Original Designs in Wood ?
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David Luckensmeyer
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