Respirator
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Respirator
Check out this new offering from DuckWorks . I've used the "Dustfoe" mask for years ,which was designed for coalminers , but I'm told it's been discontinued . This product looks interesting .Has anyone used one ? It's for dust only of course . Let me know of any other brand you particularly like.
Last edited by Bill Perkins; 06-10-2008, 11:53 AM.Tags: None -
Re: Respirator
I might order one and try it out - but I'm a sucker for a clever gadget. I go through a fair number of N95 masks - I use 'em even though I know they make a poor seal when you have a beard (which I do) because I haven't found anything better short of a full-on respirator.
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Re: Respirator
I bought the inexpensive "Jr." model and have used it several times over the past week. It is easy to put on and take off while wearing glasses and obviously does not fog them up. I wore mine for a 2 1/2 hour session the other day and found it comfortable, but my mouth did get a bit dry (as the directions say may occur), and when I took it off I noticed a 'wad' of saliva in the filter. I easily shook this out. I now make a conscious effort to swallow every so often while wearing this, which helps. Filters are easy to change -- you just rotate the mouthpiece a quarter turn and it comes off of the filter to change the filter or clean the mouthpiece. The nose clamp is easily adjusted for comfort, and once I had the mouthpiece in my mouth I forgot I was wearing it. By the way, the inner part of the mouthpiece goes inside the lips but not between the teeth. I'm glad I got mine.
Last edited by Steve Lansdowne; 06-12-2008, 07:43 PM.Comment
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Re: Respirator
Thanks for the feedback Steve . I was starting to think using the mouthpiece would be too weird for me .
Last edited by Bill Perkins; 06-10-2008, 08:49 PM.Comment
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Re: Respirator
At least be sure to use some sort of protection. My father, a master cabinetmaker, had to retire from his craft in 1966 after only 15 years in North America. He trained with hand tools in eastern Europe during WWII. No dust collection in our industrialized shops lead to a severe wood allergy. after that he was lucky if he could build one piece of furniture every 5 years. You never know if or when you'll become sensitized so take care always.Comment
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Re: Respirator
In my day job, I am a lung specialist. Pulmonary Medicine is what I do. My immediate answer if you sat in my office would be, "hey, I am glad you are thinking about your health/lungs/ and dust." I would then say now let's look at all the options available, heck even on this post.
the mask in question is only good down to
"Filtering Efficiency = Over 99.97% Down To 0.3 Microns " as per the web page.
0.1 is now the acceptable goal. Yes, 0.3 is damn good, but not the goal. Just like the N95 USED TO BE the standard, now N100 is. finer particulate matter is filtered. That is the stuff that causes the most cancer, most lung sensitivities, COPD etc...
Looking at the above mask, the issue that I would see automatically is the mouth seal. How tightly can you/would you/do you keep your lips on that piece and for how long can you do it? Studies on pulmonary testing equipment show that style is not adequate for most of our sensitive testing since the leak values are too high. One must go with a full mask style with silicone gel to get the best leak prevention.
In addition, the more you are working and getting involved, if you increase your exertion, often your resp rate increases and you naturally open your mouth to inhale larger tidal volumes of air.....opps...
the saliva issue is also bigger than just swallowing. It clogs the filter, wetting it rendering it less effective.
As I posted on the table saw blade question, it comes down to one accepting a bit of risk, personal cost and how much does your long term health matter.
I would not recommend this to my patients. I would go for either the full face or the half, with N100 cartridges, or a full face with fan/blower model.
Your choice...LBPC member since page 14, wood flour tip, green cap, no chips....Comment
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Re: Respirator
Bump.
Any hard core science types out there? Looks like Eric hasn't posted since 2013.
I am trying to figure out what type of filter to buy that would get down to 0.1 microns.
The post is a little confusing. N100 gets you to 99.97% efficiency. But nothing I have seen gets below 0.3 µm. If he is saying that 0.1 µm is the goal, I can't find a filter that gets there.
The Resp-O-Rator seems to be N100. But also only down to 0.3. This would also seem to be the case with what he is recommending.
I'd like to start using my belt sander with some pretty find grits to sharpen up some plane blades and chisels.Comment
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Re: Respirator
I use a 3m full face . about $150 from jamestown . I am more fussy about my eyes than my lungs . Also , I will employ artificial wind whenever possible with fans and blowers.
A gizmo like this is too complicated for my taste.Comment
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Re: Respirator
I used this type, the double unit, when I last wooded Drake. I thought it was great!
The filters are behind your neck, where the dust isn't as thick, and clog less. And there are 2 of them, for better flow.
I grew up snorkelling, so the mouthpiece seems natural to me.
I like how easy it is to disengage. When you walk away to get new sandpaper, or take a short break, you just drop the mouthpiece and let the thing ride where it is.
And your breath cannot fog up your glasses.
I will keep using it.Comment
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Re: Respirator
Sighted and dead vs blind and alive... There is a balance in here somewhere
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Steamboat
I get by with the judicious use of serendipity.
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Re: Respirator
Bump.
Any hard core science types out there? Looks like Eric hasn't posted since 2013.
I am trying to figure out what type of filter to buy that would get down to 0.1 microns.
The post is a little confusing. N100 gets you to 99.97% efficiency. But nothing I have seen gets below 0.3 µm. If he is saying that 0.1 µm is the goal, I can't find a filter that gets there.
The Resp-O-Rator seems to be N100. But also only down to 0.3. This would also seem to be the case with what he is recommending.
I'd like to start using my belt sander with some pretty find grits to sharpen up some plane blades and chisels.
Try this link for more info: http://www.cdc.gov/niosh/npptl/topic...n100list1.htmlSteamboat
I get by with the judicious use of serendipity.
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