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homemade breathing air supply

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Dave42H

06-02-2004 18:27:14




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With the high cost of a fresh air supply helmet and I am painting just this one tractor I tried this idea out. I washed out my shop vac add a new filter to it,put the hose on the exhaust side so air is blowing out,inserted one end of a garden hose to the vac hose,the other end to my sand blasting helmet with a hood over the helmet. seems to work good,no bad smells and contains fresh air under the hood.I keep the shop vac outside the garage with a 50ft. garden hose to insure fresh air is drawn in.Just my 2cent idea...

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CNKS

06-04-2004 08:50:12




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 Re: homemade breathing air supply in reply to Dave42H, 06-02-2004 18:27:14  
I'm not going to disagree with either Butch or Dozerboss, except to say that if I did that, I would start with a NEW shopvac. If I tried breathe air out of mine, cleaned or not, I would get every disease known to man. Due to the abuse of my throat and lungs over the years (dust, not paint fumes), all I have to do is look at dust to start coughing. I live in western Kansas, so there is dust in the air all the time, spend thousands of hours on tractors in both Texas and Kansas. My lungs are ok, but my throat reacts to everything.

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Butch

06-04-2004 05:15:44




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 Re: homemade breathing air supply in reply to Dave42H, 06-02-2004 18:27:14  
Sounds like a good system to me. In responce to Dozerboss I just want to strees my point of view that this whole deal can get overly complicated with posts about filters, screens, special pumps and thoughts of a persons health being measurably better off for the complication. If the air outside a person's shop needs to be filtered to be a reasonably safe source of air for a mask then shouldn't that person be breathing filtered air all the time? Please dont get me wrong here. Anykind of filter be it a 1" mesh so that a stray mouse doesnt get blown into your mask to a hospital operating room type filtration system will make your air supply "safer" I just dont want people who read this board and are considering using ISOs to get thoughts in their head that the system needs to be complicated to be safe to use and thus take the route of it cant hurt them to paint one tractor without some kind of fresh air mask. ANY air supply from outside a paint booth is 1000s of times better than a cartridge mask or God forbid, nothing.

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Dozerboss

06-04-2004 10:14:40




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 Re: Re: homemade breathing air supply in reply to Butch, 06-04-2004 05:15:44  
Butch, Maybe you misunderstand the intended humor at the end of my post. Ever seen the cowboy after osha poster? I don't understand your post except for the last sentence. My fresh air supplied mask goes through a charcoal and hepa spin on filter which filters and cools the air. I think the shop vac would put out hot air and be less comfortable, i myself would find it hard to work with sweat running in my eyes and then falling into my fresh paint. It maybe alot cooler where he is than me and not a problem for him. I don't get your point about filtering the air outside his shop either, (always needing a filter you said) he said he put his vac 50 feet outside (where the air was clean) so it was sending him fresh air into the shop where he was working. And i didn't say anyone should work without fresh air or just a mask or no mask, i said his idea was better than doing that and pointed out the drawback of hot air but didn't say it wouldn't work. CNS has a valid point too, dust and possible allergies from whatever the garden hose is made of and the paper or foam filter in the shop vac. Or maybe the material burning from the contacts of the electric motor. The last time i went to the emergency room the bill was over $450, enough to pay for a fresh air system if one wants to look at it that way too. I think he wanted input on his idea so he put it up there, he got it and that's what the boards for. I hope everyone is using proper protection as i'm sure you do and i don't have any problem with whatever type you feel is enough. But i can't see anything wrong with learning about the best equipment and cost and then making your decision about what type to buy and use. And if decide to spend alot, you can always sell it if you no longer need it.

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Butch

06-04-2004 14:58:37




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 Re: Re: Re: homemade breathing air supply in reply to Dozerboss, 06-04-2004 10:14:40  
I guess you didnt understand my post? Let me spell out what I said in a different way.

"Dave it sounds to me like you have a workable system. I worry sometimes that talk about filters, air sources etc complicate this whole matter to the point that the average 1 shot tractor painter is going to say the heck with it and use his old filter mask or maybe nothing. I would rather see a person use a simple system that has a very reasonable chance of providing him with breathable air than nothing. If you choose to make your system safer with the addition of the suggested filters then please do but the air your are pumping in from outside is the same air you are breathing out side anyway, is it not?"

You suggested a lot of maybes in your responce to my post and they may be valid. You also read a lot into my post that was not typed or intended. I did not say you always need a filter. What I did say in responce to your statements about filters was that any filter be it a 1" creen to a filtering unit could be said to be safer. In otherwards no matter what kind of filter you have I could say that here is one safer.
Enough of this, have a good day

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Dozerboss

06-04-2004 16:35:40




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 Re: Re: Re: Re: homemade breathing air supply in reply to Butch, 06-04-2004 14:58:37  
For the benefit of everyone reading the thread,
The air your pumping in is not the same as outside air because you are breathing it after it goes through your fresh air pump motor. On most systems it is filtered twice. Before the pump an intake filter just in case your pump is getting paint or sand from a wind change or whatever. Then a second filter is down stream of the pump to protect you from oil, oil fumes or the fumes from the arcing of an electric motor contacts, depending the type system you have. You make the same choice if you are using your air compressor as a fresh air source, your getting the air in the tank with compressor oil fumes etc and no filter. In both types your going to get whatever is in the hoses after any filter, sent to your mask.

To add to your confusion, there are hvlp systems that provide air to the paint hood/helmet and the paint gun that must have a filter.

The one shot tractor painter has probably had a lot of experience with dust, pesticides, fertilizers and weld fumes as well and will hopefully not overlook protection from iso's, paint fumes, or sand clouds.

My original point was his shop vac system is better than breathing paint or sand or iso's. It's in the first sentence, and hard to miss. I guess were all on differant levels. I hope that all the discussion over the same point, doesn't discourage others from sharing their idea's and experiences for fear of someone responding to their post negatively.

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Butch

06-05-2004 03:26:04




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 Re: Re: Re: Re: Re: homemade breathing air supply in reply to Dozerboss, 06-04-2004 16:35:40  
Dozerboss, all I have done here is post my opinons, just as you. Just as in your little deal with CNKS below it is you who starts firing the personal shots and being negitive when somebody posts a differing opinion. I assure you that nothing personal was implied or intended in my posts on this page and as you just said above, may we dissagree without insult? We do agree on at least one thing, none of this adds a thing to this forum. May we just add our opinions and go on? Thats what I plan on doing, have a nice day.

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Dozerboss

06-05-2004 19:42:54




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 Re: Re: Re: Re: Re: Re: homemade breathing air sup in reply to Butch, 06-05-2004 03:26:04  
Well, You just did say something personal and insulting to me in the first sentence of your last post June 04, 2004 at 16:35:40. Quote (" it is you who starts firing the personal shots and being negitive") Then you go on to say Quote (" I assure you that nothing personal was implied or intended in my posts on this page"). IT MAKES NO SENSE TO SAY SOMETHING, THEN SAY YOUR NOT SAYING IT.

I didn't take personal shots or insults at anyone on this board and i'm glad to help anyone. I addressed my last post on 06-04-2004 16:35:40 to those reading the board/thread. If saying i guess we're all on differant levels was considered negative and a personnal shot at you, than its just you, no one said your name. I took alot of time to try and explain fresh air as i know it and i'm sure others benefitted from the discussion. The only thing i can say is YIKES..... ....

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Dozerboss

06-03-2004 21:28:44




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 Re: homemade breathing air supply in reply to Dave42H, 06-02-2004 18:27:14  
I would say thats better than breathing in paint, ISO's or sand dust from blasting, but not as good or comfortable as breathing filtered air through a charcoal or hepa filter. And i would think the air you would get would be very hot from the vac motor. In theory you need enough air flow at the helmet to "push out contaminates" or in other words positive (higher) pressure in the helmet above the outside air pressure. If the legal team at shop vac is reading, you can bet they are working on new warning labels for use of their products! Unfortuneately the Apollo 13 all american spirit, I don't care what it was designed to do, I care what it can do! Is dead in corporate america and washington d.c. That's the result of a nation that is producing more lawyers, than doctors and teachers. If you perfect it and try to sell it, you'll probably get sued!

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