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Antique Tractor Paint and Bodywork

paint gun

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patsdeere

10-09-2007 00:36:49




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I have a gun and after I get done spraying I notice that there seems to be a lot of hair/dirt/junk that is in the paint. The gun obviously hasn't been cleaned super well in the past. I am thinking it might be little bits of paint coming through the tip. If I use a paint stripper to clean out the tank would that help reduce all that crap that seems to come out of the tip? Or is there any other ideas to clean out the gun?

Thanks for all the help.

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DaveS

12-01-2007 13:29:53




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 Re: paint gun in reply to patsdeere, 10-09-2007 00:36:49  
I learned a long time ago that cleaning your paint gun after each use will pay for itself in the long run. I have an old sharp 775 gun that I bought in the early 80's, and it still looks new. I clean it after every paint job, and when i'm done you can not tell what color was last sprayed through it.

That said, Many of the gravity feed guns have a filter screen at the bottom of the cup. You might take it apart and be sure it's not full of crap.

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rustyj

11-16-2007 16:58:33




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 Re: paint gun in reply to patsdeere, 10-09-2007 00:36:49  
Question: Do you have the long hair favored by the younger folks of today? If so, get a plastic shower cap as used by the ladies in the shower. Then get some of those little white round ball air filters that screw onto the inlet fitting of the paint gun-ahead of the airline. Buy some of those paper coveralls, and wear them for painting. Wipe the parts down with Pre-
Kleeno, or any pre-wash solvent, but not gasoline!!! Wet the floor, and don't have a fan forced heater running when you paint! Dust off your clothing with your blow gun. If the paint gun is "spitting", look where the needle goes into the spray head of the paint gun. Put one small drop of engine oil on the place where the needle moves back and forth, and work it a few times, wipe off the excess, and go try it. And keep others out of where you are painting. Another thing--Armor-all will surely mess up any painting as will car polish with silicones in it! Keep silicones completely out of the shop/painting areas! And, make sure some neighbor isn't polishing or waxing his car nearby! Before painting, wash the job with Pre Kleano, and dry it. Use new clean white cloths for this. Do not use the red shop rags, as they have terrible solvents in them, which will give you "OWL EYES", instead of "Fish Eyes"! Good luck: Rustyj

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Johnsdeere

10-15-2007 20:26:03




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 Re: paint gun in reply to patsdeere, 10-09-2007 00:36:49  
Most likely caused by dirt, dust and hair on the panel ond or falling in the wet paint. You may try wetting down the floor first with water and having as clean as a shop as possible. DOnt under estimate the final wipe dowm and the quality of cleaning rags also.



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soundguy

10-11-2007 10:58:42




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 Re: paint gun in reply to patsdeere, 10-09-2007 00:36:49  
If you have stuff all in your paint.. maybee you got bad air.. or are painting outside in a windstorm? ( only half joking ).

When i finish painting I always dump the rest of the paint in my cup into a disposable cup.. like a ziplock disposable food container. The activated mix is usually good for a few hours in case i need to do a lugnut or hidden area touch up.

Anyway.. after that i pour a few oz of MS in the cup, put on the gun, and slosh around, dump the cup into my waste bucket and then dump in a few oz of naptha, and wipe out with a lint free rag.. .. then I add some more naptha and ms mix and wet my rag and wipe my gun and syphon tube down, and then run the rest of the clear solvent thru the gun spraying on cardboard till it's clear.. then I clean the tip.. wipe out the cup again, close it up and wipe the outside down, and then into it's sealed up plastic box ( old kitty litter 40# tub with lid.)

Clean gun helps with painting.

My gun is a chinese knock off of a binks.. it was a 15$ gun on sale for 10$.. I bought it 7ys ago.. it looks brand new. I just this year added another gun to my collection, one with a small 10'oz cup, and a regular cup.. so i can move my older gun down to being a dedicated primer gun, and te other to do paint, or small batch painting / touch up.

soundguy

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circus

10-11-2007 10:11:56




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 Re: paint gun in reply to patsdeere, 10-09-2007 00:36:49  
Signs of a dirty gun is localized dirt in the finish. Dried paint comes out in clumps. If dirt is in the entire finish it's coming from somewhere else.



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CNKS

10-09-2007 17:28:42




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 Re: paint gun in reply to patsdeere, 10-09-2007 00:36:49  
I'm not sure it's coming out of the gun, your painting environment could be dirty. I have a problem with lint -- looks like small pieces of hair, and is in the air in my shop, outside also.



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Kent in KC

10-09-2007 08:16:30




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 Re: paint gun in reply to patsdeere, 10-09-2007 00:36:49  
I agree with all Glennster said. Be careful though, some of those gun cleaners are really strong stuff and can damage your seals. UNder normal use there should be no need to totally soak a gun in solvent which could - again - lead to damaging your grommets and such. That's what they tell me at the auto paint store anyway.



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glennster

10-09-2007 05:36:28




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 Re: paint gun in reply to patsdeere, 10-09-2007 00:36:49  
you can use stripper in the cup if its an aluminum cup. you are also going to need to dismantle the gun, ,get a set of gun cleaning brushes and swab everything out. if its a siphon feed, cup on the bottom, the pick up tube from the cup to the gun body needs to be clean, then pull both adjustment knobs out, the tip ect and get it all clean. you can pick up a gun cleaning solvent from your paint supplier, its more agressive than thinner, but less than stripper. another thing you may want to do is get a new air hose just for painting, get a disposable air filter and put it on the line. any little bit helps.

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