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                        Iwata HPCS - Air Bubbles in the Paint Cup

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                        6 replies
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                        darson
                        • Member since
                          February 2003
                        • From: Melbourne, Australia
                        Iwata HPCS - Air Bubbles in the Paint Cup
                        Posted by darson on Sunday, October 2, 2005 11:47 PM
                        I have a bit of a problem with my HP-CS that I'm hoping I can get some help with here.

                        Problem
                        When depressing and pulling back the trigger on my Eclipse when using my .35mm nozzle and needle combo I get air coming through but no paint (or thinner, water or whatever). I do however get loads of bubbles in the paint cup.

                        What I’ve done
                        I have cleaned everything as completely and inspected all parts for blockages (there are none). I have checked all parts for any sign of damage and cannot see any. I cannot see any visible signs of air entering the a/b from the outside. I have changed nozzle, needle and nozzle cap to my .5mm combo and everything works beautifully, with no bubbles or blockages.

                        The manual says that it may be a damaged nozzle, but I’m not seeing any evidence of this. Any help that anybody could give on this would be much appreciated.

                        Cheers
                        Darren
                        Report Abuse
                        MikeV
                        • Member since
                          April 2003
                        • From: Hayward, CA
                        Posted by MikeV on Monday, October 3, 2005 12:04 AM
                        Darren,

                        How old is this airbrush?
                        I was wondering if the needle bearing needs replacing?

                        Mike

                        “Wisdom is the right use of knowledge. To know is not to be wise. Many men know a great deal, and are all the greater fools for it. There is no fool so great a fool as a knowing fool. But to know how to use knowledge is to have wisdom. " Charles Spurgeon
                        Report Abuse
                        darson
                        • Member since
                          February 2003
                        • From: Melbourne, Australia
                        Posted by darson on Monday, October 3, 2005 1:57 AM
                        QUOTE: Originally posted by MikeV

                        Darren,

                        How old is this airbrush?
                        I was wondering if the needle bearing needs replacing?

                        Mike


                        Mike the airbrush is about 18 months old.
                        The thing that puzzles me is the fact that my .5mm needle (which I'm sure is the same diameter as .35mm needle) works just fine.

                        Darren
                        Report Abuse
                        Anonymous
                        • Member since
                          November 2005
                        Posted by Anonymous on Monday, October 3, 2005 9:23 AM
                        It could be a seating problem with the nozzle. I have had that happen on my Anthem, which is also a "floating" cone tip airbrush.

                        E
                        Report Abuse
                        MikeV
                        • Member since
                          April 2003
                        • From: Hayward, CA
                        Posted by MikeV on Monday, October 3, 2005 10:28 PM
                        QUOTE: Originally posted by darson

                        QUOTE: Originally posted by MikeV

                        Darren,

                        How old is this airbrush?
                        I was wondering if the needle bearing needs replacing?

                        Mike


                        Mike the airbrush is about 18 months old.
                        The thing that puzzles me is the fact that my .5mm needle (which I'm sure is the same diameter as .35mm needle) works just fine.

                        Darren


                        It may very well be the tip then.
                        That is a micro-tip on that airbrush which is more precise than the standard cone tips of lesser models.

                        Mike

                        “Wisdom is the right use of knowledge. To know is not to be wise. Many men know a great deal, and are all the greater fools for it. There is no fool so great a fool as a knowing fool. But to know how to use knowledge is to have wisdom. " Charles Spurgeon
                        Report Abuse
                        mass tactical
                        • Member since
                          February 2003
                        Posted by mass tactical on Tuesday, October 4, 2005 8:06 AM
                        I have also had this problem. Poor seating, as prviously posted, appears to be the problem. What I have done is to remove the needle and polish it with 0000 steel wool. I clean the nozzle, soaking it in lacquer thinner, and then take a sharpened toothpick and polish the inside of the nozzle. Give this a try as I believe it will work for you.

                        Mike M
                        Report Abuse
                        osher
                        • Member since
                          April 2003
                        • From: Edgware, London
                        Posted by osher on Monday, October 17, 2005 7:56 AM
                        I would agree that soaking in lacquer (or cellulose) thinner, and then gently scrubbing with a toothpick will work. I had the same problem with my HP-C. The nozzle surround (or whatever it's called) can be loosened and cleaned. I use a flat sided tweaser for this.

                        If this doesn't work, beeswax can be used to seal the joints. This is the recommendation of Iwata themselves. In the UK the airbrush company, who supply Iwata, also supply beeswax.
                        Report Abuse
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