respirator question?

ryan9977

ryan9977

Joined
Feb 16, 2006
Messages
1,962
http://www.boss-safety.com/shop/half-face-respirators-7500-respirator-c-415_9_14_53_656.html


http://www.boss-safety.com/shop/cartridges-filters-2091-filter-series-c-415_9_18_127_576.html

http://www.boss-safety.com/shop/60925-formaldehydeorganic-vaporp100-p-238.html




ok so i looked up some info on respirators here....the following links are from a post by gixxer.....i do have a few questions about respirators though....

1)how do u know what size to get.....i'm a pretty big guy so i would assume the biggest size

2)is p100 ok....i would assume that means the size particles it protects against?

3)how do u know when u have to change the filter cartridges?

4)i was going to wear safety glasses also......would i better off getting a full face respirator or perhaps a regular respirator and a face shield?


any recommendations or advice would be appreciated-i am kinda confused about the whole respiartor situation and have been putting it off......thanks alot for any info.....ryan
 
I have found the straps that hold respirators to your head get stretched out of shape in 3 or 4 months. They get nasty too, from the perspiration and grindings in the air.

I buy the 3M canister type that auto painters use. The canisters are fixed. They have prefilters you can change when they get dirty. Throw them away when they get foul and get a new one.
They come in a sealed foil package and are available at any auto paint supply store.

I wear a full shield face mask when I grind. The canister mask will fit inside just fine.
I keep a couple of pairs of safety glasses handy also. Especially when not using the respirator.
They make them with bi-focal lens built in, or you can purchase the lens and stick them on yourself.
Happy to see you want to protect your eyes and lungs; both of them are a necessity for making knives.

Good luck, Fred
 
I use P100 OV/AG respirator cartridges I get from a composites supplier. I build RV's for a living so I work with a lot of fibreglass. Need the organic vapors protection for layup, p100 for grinding, and shit, why not throw in acid gases for when I dip things in murietic?

Bout ten bucks a pop if you buy em single, but I buy a box o' 10.
 
In knifemaking the main worry is particulate mater.
P-100 is the rating you want, or HEPA.

Gasses are annoying, but most that come from knife grinding are more noxious than toxic. Organic vapor and formaldehyde ratings are good, but not nearly as important as the particle filtering.

One thing many new makers do is get a respirator and stop thinking about particulate problems. Just filtering them from your lungs while grinding is only about 10% of the solution. Removing the particulate from the air and surfaces in the shop is the rest of the answer. A good dust removal/capture system and cleaning up after grinding will keep the particles from being breathed when not grinding. It will also keep them from your pets, wife and children, and others.

Stacy
 
thanks for all the info-my shop is located in my garage-i was planning on having the door open while i work.....my forge is on wheels so i can scoot it out of my shop to work right outside.....am i still gonna have a problem with particles floating around in the air if my shop is open all the time?......i don't know anything about dust filtration systems-i know how to clean and use a shop vac-that's about it:confused:......any REALLY simple solutions for me?.....ryan


p.s.-stacy-thanks fo rthat thread a while ago-my profile is all updated:thumbup:
 
If you can stand to vent the outflow from whatever dust collection/filtration system you use outside, then you won't have to worry as much about breathing it.
A shopvac might not be much of a filter, but could draw a lot of air out of your breathing area and not recycle it.
Dave
 
bladsmth said:
In knifemaking the main worry is particulate mater.
P-100 is the rating you want, or HEPA.

Gasses are annoying, but most that come from knife grinding are more noxious than toxic. Organic vapor and formaldehyde ratings are good, but not nearly as important as the particle filtering.

One thing many new makers do is get a respirator and stop thinking about particulate problems. Just filtering them from your lungs while grinding is only about 10% of the solution. Removing the particulate from the air and surfaces in the shop is the rest of the answer. A good dust removal/capture system and cleaning up after grinding will keep the particles from being breathed when not grinding. It will also keep them from your pets, wife and children, and others.

Stacy
Click to expand...

I do not have an adequate dust removal system yet, so I wear my respirator right into the kitchen from the garage. The respirator does no good if you take it off 30sec after you get done grinding something. I wear a full faceshield when grinding.

Ryan, you live in Toms River so you are not in the boonies per se. Look in the yellow pages for a lab safety supply and go there and try em on. You might have to drive to Brick or Barnegat, maybe even point pleasant but you can find one. Since you are a big guy you definately will need the large. The 6500 works just as well as the 7500 for me but the down directed exhaust of the 7500 is the seller for me.

Another thing about wearing the safety glasses... I always had a problem with grit bouncing off of the nose of the respirator right under the safety glasses and into my eyes. I would not get the full face respirator, cause there is not much ventilation except for the cool air of your inhaled breath. your face will sweat up fast. with the half face and full faceshield there is more ventilation for the rest of your exposed face.

How do I know when to change my filter? Well, I dunno that.

those respirators are washable, so you can get the nasty off of the straps, and get that dried spit off of the diaphragm so it does not stick. I know when it is time to wash mine when I put it on and have to "pop" the diaphragm when I exhale. Of course take off the cartridges...
 
lab safety supply-got it-i will definately look one up and go there.....i don't mind driving somewhere to find a good respirator....i just didn't really know where to go for one.....thanks alot....i really appreciate it.....ryan


p.s.-i called a friend who i thought might know a little info-he said his cartridges have a little indicator on them that changes color-anyone ever hear of that-do they all come with that on them?
 
Because of the particle sizes involved you do NOT need cannister type respirators. What will do an excellent job is those simple throw away particle masks. Frank
 
Frank Niro said:
Because of the particle sizes involved you do NOT need cannister type respirators. What will do an excellent job is those simple throw away particle masks. Frank
Click to expand...






r u talking about those little white disposal masks?.....that goes agains everything i've read so far:confused:......ryan
 
Ace hardware Point Pleasant... they have this model, but I would call to see if they offer just the respirator without the cartridges in this link so you can get the 2091 filters for it and try em on. you might find something closer this was just a quick yahoo search. This combo is expensive but at least you can try one on.

http://www.shoplocal.com/dl-48933430-3m-professional-series-respirator.fp


(732)899-4218
1307 BEAVER DAM ROAD | PT PLEASANT, NJ 08742
 
Last edited:
Frank Niro said:
Because of the particle sizes involved you do NOT need cannister type respirators. What will do an excellent job is those simple throw away particle masks. Frank
Click to expand...

I disagree. Wear a n-95 disposable and sand/grind wood/metal for an hour, then blow your nose. If your snot is still not grainy and a different colour then you have the best dust collection system ever.
 
NIOSH APPROVAL INFORMATION
1. Protection
P100—Particulate Filter (99.97% filter
efficiency level) effective against all par-
ticulate aerosols.
N95—Particulate Filter (95% filter effi-
ciency level) effective against all particu-
late aerosols free of oil; time use restric-
tions may apply.
R95—Particulate Filter (95% filter effi-
ciency level) effective against all particu-
late aerosols; time use restrictions may
apply.

Because I would rather kill my lungs with cigarettes than metal dust, I use the p100 filters for my satisfaction.
 
You must log in or register to reply here.
Back
Top