School me on painting fellas

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Jrgunn5150

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One step ahead of the game with saftey actually. Ive got a respirator from back in the day when i used to sand fiberglass/ gelcoat camper caps. Do i still need it if i spray outside?

Yes, paint is nasty stuff. I mean, you're going to aerosolize some really nasty stuff and have it hanging out in the air.

I don't go so far as to throw my respirator out after every use, but I do get rid of them yearly.
 

michael hurd

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Yes, you should still wear a respirator painting outside. If you are using a paint system with isocyanate hardeners, it is also recommended to wear one while mixing the paint, as you are breathing the fumes coming out of the container carried by the strong solvents.

If spraying a single component alkyd enamel that does not require a hardener, then you can likely use a nuisance N95 particulate mask.
 

Biggershaft96

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Yes, you should still wear a respirator painting outside. If you are using a paint system with isocyanate hardeners, it is also recommended to wear one while mixing the paint, as you are breathing the fumes coming out of the container carried by the strong solvents.

If spraying a single component alkyd enamel that does not require a hardener, then you can likely use a nuisance N95 particulate mask.
Ya lost me at isocyanate lol. But ill take your advice and wear mine. Ive done some reading and i think im gonna start out with a single stage urethane paint on an old fiberglass truck topper. My regulator should be here tomorrow so i can start practicing with aceatone and plywood. Once i get used to the gun ill probably try the topper, maybe this weekend but no promises lol. Ill make a photobucket and post the results.
 

Jrgunn5150

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Ya lost me at isocyanate lol. But ill take your advice and wear mine. Ive done some reading and i think im gonna start out with a single stage urethane paint on an old fiberglass truck topper. My regulator should be here tomorrow so i can start practicing with aceatone and plywood. Once i get used to the gun ill probably try the topper, maybe this weekend but no promises lol. Ill make a photobucket and post the results.

If your paint takes hardener, like a single stage urethane will, it has some deadly juju in it.

I'm not Captain Safety, I do fairly ridiculous thing's regularly, but I'm not messing with getting that stuff inside my lungs.
 

Biggershaft96

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Na i found some cheap ass paint at napa to just practice with. Its supposed to be a ready to spray pint for like $25.00
 

Biggershaft96

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Got a quick question. I got the regulator in today. As soon as i crack the regulator it hits 90psi almost instantly, then when i pull the trigger on the gun it drops to zero. So is it supposed to be 35psi with the trigger on the gun wide open or closed?
 

Jrgunn5150

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Got a quick question. I got the regulator in today. As soon as i crack the regulator it hits 90psi almost instantly, then when i pull the trigger on the gun it drops to zero. So is it supposed to be 35psi with the trigger on the gun wide open or closed?

It should be whatever the gun is recommended for with the trigger closed. They flow so much air that it winds up being 8-10 psi coming out with 35-40 going in.
 

michael hurd

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There are lots of opinions out there.

It would be helpful to know the pressure in your system, the size and length of hose you are using, etc.

I set the pressure to 27 PSI with the trigger wide open at the regulator on the gun, and according to the specifications it will consume 13 cubic feet a minute at that pressure. High flow fittings and 3/8 hose, 25 feet long, with the system pressure set at 90 PSI where the hose connects at the wall.
 

Biggershaft96

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It should be whatever the gun is recommended for with the trigger closed. They flow so much air that it winds up being 8-10 psi coming out with 35-40 going in.
If i crack the regulator even a little bit it slowly builds until it hits 90 but if i hold it wide open i can set it at whatever psi i want and it will stay until i release the trigger. Idk if its just the cheap regulator or thats normal.

There are lots of opinions out there.

It would be helpful to know the pressure in your system, the size and length of hose you are using, etc.

I set the pressure to 27 PSI with the trigger wide open at the regulator on the gun, and according to the specifications it will consume 13 cubic feet a minute at that pressure. High flow fittings and 3/8 hose, 25 feet long, with the system pressure set at 90 PSI where the hose connects at the wall.

Well at the compressor it runs about 220 - 240 psi then the regulator on the wall throttles it down to 90. Ive got 3 or 4 water seporators before my quick connect at the wall and then my 50 ft 3/8 air line with another water seporator right before my gun mounted regulator. Im not sure on cubic feet of air or anything but ive got more than enough capacity (about 200 gallons) and its a screw style compressor.

Edit: the manual for then gun says i need to maintain 29psi to get 10psi at the tip but doesnt say whether or not to hold the trigger open or closed
 
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Jrgunn5150

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If i crack the regulator even a little bit it slowly builds until it hits 90 but if i hold it wide open i can set it at whatever psi i want and it will stay until i release the trigger. Idk if its just the cheap regulator or thats normal.



Well at the compressor it runs about 220 - 240 psi then the regulator on the wall throttles it down to 90. Ive got 3 or 4 water seporators before my quick connect at the wall and then my 50 ft 3/8 air line with another water seporator right before my gun mounted regulator. Im not sure on cubic feet of air or anything but ive got more than enough capacity (about 200 gallons) and its a screw style compressor.

Edit: the manual for then gun says i need to maintain 29psi to get 10psi at the tip but doesnt say whether or not to hold the trigger open or closed

No, that's weird lol. Mine goes where I set it and stays there unless I'm using too much air, which is rare, then it drops.
 
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