Air gun question

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andj

CGF, Certified Grumble Framer
Joined
Sep 30, 2006
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103
Loc
South Georgia
I have an air gun attachment on my compressor that I recently started using to clean off dust from glass. It works well, however, I'm having issues...sometimes the gun will spray out an oily mist. I am using an oil-less compressor (but there may be oil in the hose,as its not a new hose). Do most of you have oil and moisture filtration attachments on your compressors to prevent this? I saw that Larson sells several different filter attachments for around $100-$170. Not sure if thats what I need... What do you use and recommend so this doesn't happen?

Thanks!
 
You should definitely use the filtration attachments. Also, it's not a bad idea to just spray a shot at the floor before spraying the glass, to clear out any oil or water in the system.
 
I can get a cheap moisture trap at sears. The have the standard one, also the trap has a pressure gauge and valve on it so that you can turn down the pressure on the hand air gun. To much pressure can cause damage to you and your art or what every you are dusting. I believe there is a OSHA max pressure on a hand air gun.
 
I am thinking it would be an absolute necessity in Georgia!

I used to live in BC & had major problems with moisture - in fact it would freeze the lines in the winter!

Here in Alberta I have emptied my filters 1 a year only because I wanted to say I did it. Basically no moisture.

Also, make sure you have at least 20 feet of piping or hose between the compressor/tank & the separator so the air has time to cool down for condensation.
 
You are getting moisture build up in your compressor tank. As air compresses it squeezes the moisture out of the air, which is why most compressors have a drain valve on the bottom of the tank, failure to drain the tank will cause the tank to rust right through, and possibly explode. I have a rather large tank so I’ve drained up to ½ gallon from my tank at times if I forget to drain it for several months

A good moisture filter will solve the problem of it spraying onto the glass, you might have to put the filter on the end of the hose right before your tool connection point rather than on the tank to get all moisture out of the hose as well
 
here in humid Florida I have TWO water seperators in each line, plus drain the tanks daily.....it's almost impossible to get rid of all the moisture, but we fight the battle daily with draining the filters and tanks and for derier weather once in a while.
 
And here I thought this was one I could get in on about Air Rifles and how good some are for nailing raccoons, skunks, porcupines and even the odd coyote. Darn, I don't want to dust them but nail the suckers dead. A good .22 or .25 cal will do the job but doesn't help artwork much unless you need holes in it.

Even with the high pressure pumps to fill the air tanks for the rifle we use moisture and particulate filters. On your artwork, use the moisture filter. An inexpensive one from tank to hose and the really good one near the end of the hose will help a lot. As one mentioned, point it away from artwork and hit a few puffs to make sure all is clean and working well before pointing it at artwork.
 
I've used inexpensive compressors like Craftsman, they are oiless, but when they are ready to go they give off what appears to be a white oily residue. The regulator/oiler on my saw, being closest to the compressor, usually picks up the gunk first. As soon as I changed out the compressor, the problem went away.
 
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