sprays upside down only

[xzotic ink]

so i thought id tell ya how the gun is doing,,,,,because i narrowed it down to how it functions,,NOT A FUN THING,,,BUT it will not spray right side up unless i turn it upside down and let it spray and shake it for a few,,than turn it BACK right side up and it will spray for like 15 seconds to 20,,than i have to shake it and turn it back upside down,,been doing this for the whole batch of sneakers,,,and

YES I CLEANED IT LIKE CRAZY,,BOUGHT NEW PIECES TO IT, twice ,so please no more that its dirty cause it just cant be,,,,

also it exploded on me,,,,i turned the thing upside down to get flow going and it just wouldnt spray,,,so took off the color cup and WOOOOO shot right up about 10 feet in the air paint,,,,,ruined a pair of sneakers but i covered the mistake,,,,,i have 2 left to paint and im done,,,,im sure ill make it work for the last two,,,

JUST THOUGHT if anyone had any in put why it would work only upside down,,,,

DOES IT SOUND TECHNICAL?

[landsbro]

Originally Posted by xzotic ink

so i thought id tell ya how the gun is doing,,,,,because i narrowed it down to how it functions,,NOT A FUN THING,,,BUT it will not spray right side up unless i turn it upside down and let it spray and shake it for a few,,than turn it BACK right side up and it will spray for like 15 seconds to 20,,than i have to shake it and turn it back upside down,,been doing this for the whole batch of sneakers,,,and

YES I CLEANED IT LIKE CRAZY,,BOUGHT NEW PIECES TO IT, twice ,so please no more that its dirty cause it just cant be,,,,

also it exploded on me,,,,i turned the thing upside down to get flow going and it just wouldnt spray,,,so took off the color cup and WOOOOO shot right up about 10 feet in the air paint,,,,,ruined a pair of sneakers but i covered the mistake,,,,,i have 2 left to paint and im done,,,,im sure ill make it work for the last two,,,

JUST THOUGHT if anyone had any in put why it would work only upside down,,,,

DOES IT SOUND TECHNICAL?

Sounds strange,,,what kind of airbrush do you have,,
are you using one shot paints just kidding,,,

sounds like you have some kind off pressure build up,,
i have a passhe vl that act little weird sometimes ,,,
when cleaning it,,it keep on pressing out cleaning liquid even that i don't
push down the trigger,,
this was because the little hole on the colorcup/bottle was clogged so it build up some pressure in there ..

[xzotic ink]

yep at first i thought the little hole on the cup was clogged but it was clear,,i learned that the hard way to always check the hole before it explodes in my face,,lol

iwata eclipse,,,it time to lay it to rest

[aixguy]

sounds like the connection to the plastic dip tube is loose or the tube is cracked near the top where it goes into the cap. Or maybe metal tube from the cap that goes into the brush has a crack.
If you take the bottle off the brush and put your finger over the hole where the bottle plugs in, then air on and pull tirgger all the way back, you should feel suction on your finger. If you do feel it and it is fairly strong, your problem is in the cap or bottle or tube. If no suction then the problem is in the fornt end of the airbrush, either nozzle or cap..
I am guessing plastic tube..

[xzotic ink]

i will kill myself if its in the tube ,,,,i will definately try that when i get home tonight,,,OMG image that! something so simple in front of my face,,this whole time,,

[KDSilverBrush]

Its got me puzzeled too Xzotic, sure hope ya find the problem soon.

[fontgeek]

It sounds like a loose feedtube or cap fitting for one part of your problem, but it also sounds like a clog or debris in the needle cap. That would explain the explosion of paint when youre removed the bottle.

[redneck]

nat, did you try to back-flush the brush with water in the bottle, did you use telfon tape to seal the threads, maybe a piece of tape or a small piece of a cut o-rings that stop the passage of paint but fall when you turn the brush up-side down

[brushbyair]

X I have had a blow up when I removed a bottle from the gun before, it was cause the vent hole in the bottle was plugged. That may be why it worked upside down, almost like a gravity feed instead of a suction feed.

[fontgeek]

Originally Posted by brushbyair

X I have had a blow up when I removed a bottle from the gun before, it was cause the vent hole in the bottle was plugged. That may be why it worked upside down, almost like a gravity feed instead of a suction feed.

At least in theory, you shouldn't have the bottle or airbrush "Blowup" on you if the vent is closed, if anything, it should basically be doing a big inhale once the bottle is unscrewed, the vent is opened, or the bottle is removed from the airbrush. As you have stated, the airbrush is getting the paint by vacuum or suction, if the vent hole is blocked, that means that the brush will pull a stronger and stronger vacuum until it has hit it's limit because of the lack of strength of the vacuum, or a leak to the atmosphere has been introduced (the vent hole opens, the bottle is unscrewed, etc.)

If you are getting pressure in the bottle or cup, it is because the normal passage for air(out the nozzle) has been blocked, so the air takes the easiest path of escape, which in this case means back through the nozzle and into the bottle. The vent may or may not be blocked, if it is blocked, then the pressure will be greater, but even with it open, your compressor can push a fair amount of pressure back into the bottle, so much so that it can force paint up to block the vent.

But the real culprit is the blocked nozzle cap that won't let the air out to start with, or the nozzle that isn't seated snuggly or cleanly. If the nozzle doesn't seat well, then the air may find it easier to push back through the base of the nozzle and into the paint passage, and eventually into the paint reservoir/bottle/cup. I don't remember whether the Eclipse has a threaded nozzle or not, if it is threaded, you might try removing it, clean the threads on the nozzle and the airbrush, then apply some bee's wax to the threads and GENTLY reinstall the nozzle, these snap off easily, so be careful. If your problem is leaking threads, then the bee's wax should solve it, if not, then at least you have eliminated a possibility.

The airbrush may have been bubbling up without being noticed in the heat of the work day, and like all dirty needles, and nozzles, they only get worse until you clean them.

So, check the suction tube and cap fittings on your bottles, backflush your brush and clean it thoroughly, and make sure your vent is open.
If in doubt, try a different bottle or a cup in place of the bottle you currrently use on the brush. If everything is clean, clear, and tight, then the brush should work just fine with the sidecup and water, if it still stops up, then your brush is probably still dirty. Use a high powered jewelers loupe to do a careful inspection of the interior and exterior of the fluid nozzle and the nozzle cap.

If you can find one, a syringe that can take laquer thinner or denatured alcohol may help your cause. With the needle pulled back enough to open the airbrush nozzle, stick the needle/nozzle from the syringe into the opening for the bottle on the bottom of the airbrush, and force the solvent through. I found that a tiny syringe that comes with the refill kits for ink cartridges works great for this. The tiny needle works well for the gravity feed brushes becasue I can feed it into the same hole that the needle passes through at the front of the airbrush reservoir.
Good luck!

[brushbyair]

Nice in theory, but all it was, was a blocked vent tube, when I removed the bottle from the brush, paint went everywhere out of the suction tube on the bottle, not really a blow up, more of a release from the bottle. Once the vent hole was cleared all worked well!

[xzotic ink]

Originally Posted by redneck

nat, did you try to back-flush the brush with water in the bottle, did you use telfon tape to seal the threads, maybe a piece of tape or a small piece of a cut o-rings that stop the passage of paint but fall when you turn the brush up-side down

my day job said it had to be that,,we have a boroscope lying around the house,i can look right into that thing,,i will bring it to work and see if i can see inside of it,,,SAFE TOOLS ARE THE BEST FOR EVERYTHING,,

[redneck]

Originally Posted by xzotic ink

my day job said it had to be that,,we have a boroscope lying around the house,i can look right into that thing,,i will bring it to work and see if i can see inside of it,,,SAFE TOOLS ARE THE BEST FOR EVERYTHING,,

someone mention using a syringe to back-flush the brush[fontgeek I think] maybe that will remove the problem, the boroscope or borescope will help a heap to spot the stoppage, good luck