Screw problem

[patoche]

Well

I don't know of someone has already get this mechanical problem.
I wanted to change the inside ring N°123450 because i felt it dead ( no more resistance when i introduced the needle), no more full watertight.
The problem is it was very hard to unscew the N° 123471 .Impossible to get it . I'don't know if because i've used a too mush small screwdriver but it sleep inside and i've killed the scew head .
One of notch is completly round and i Can't get it , even with a bigger screw driver, no more good grip for the screwdriver.
Sure i have squeeze the crew by turning too hard the last time i've changed it.
I've tried also to let in thinner in case of too much dry paint, put some product for jam.

If someone has an idea !

Thanks

pat

[landsbro]

hmm,, thats a tough one Pat,,i believe the screw is made of brass (some are in my ab's)
so it's kind of soft, a use of a drill is not an option might ruin the threads
i have used a tool to remove broken screws,it has been on cars and bikes
so i'm not sure it would work on this small details,,
anyhow this is the way it works ,,you drill a hole in the screw and
screw this in the threads are anti-clockwise on this so it will eventually losen the broken screw,,,
i don't know if there are such small tools that fit in the small opening
you have in the screw,,,

He,,he,,Pat i think our english speaking friends have good laugh when reading this
two not so good at english trying to have a conversation,,
i hope you understod what i was trying to say.
/kimmo

[patoche]

Sure, strange conversation for english people. Whatever , you englis is better than mine, most of the swedish speks a fluent english, not here
I've understand what you lean and the tool can be the right solution. I will try to find one tomorrow!
The screw is also in brass .

Thanks

pat

[fontgeek]

A couple of things you might try.
First, a philips head or star type screwdriver that is just a tiny bit larger than the inside diameter of the packing screw, because the nut is made of brass, it is somewhat soft, so having the screwdriver that is slightly bigger lets you push it into the screw, kind of making it's own slots or getting a grip on existing material. With the screwdriver jambed into the screw, you may be able to back it out. Keep in mind, that no matter what you do, you need to replace this screw, and if you are going to muck around with the screw in the future, then you need to get the right tool to do it, if for no other reason than the fact that you would have to go through all this again.

The second method would be using an easy-out. This is a tool made for removing screws with stripped heads, however, finding an easy-out that will do the job and still fit down the existing opening will be a bit tougher than finding a philips head or start head screwdriver the right size.
An easy out is basically a screw with threads that go in the opposite direction, Once it is screwed down into the existing troubled screw, you just keep on trying to screw it in. Because the threads go the opposite direction, once the easy-out has stopped sinking into the existing screw, it starts backing the existing screw out of the airbrush.

Good luck!

[redneck]

Pat , do you had access to a drill press? you need to be careful that the drill-bit don't wander, you might be able to use a dremel tool with a small drill-bit but if it were me I take it to a tool&die maker since the screw are recess in the brush body

[patoche]

Thanks all

I will go in shop and try to buy few tools , hope i will find to the good size.
I know the tool to remove screw by doing his own notch, but i've always seen large one.
The problem with the brass is friable .
I think it would work if i put the airbrush in vice and hit the tool with hammer, by this way , the tool will get a good grip in the screw, but i'm afraid to kill the airbrush if it doesn't work.
I will try this as a last solution!

pat

[fontgeek]

You might consider putting some superglue on the head of the screwdriver so that it becomes one with the screw.
What brand or make brush is this?

[redneck]

I did not notice that the needle went thru. the screw ,how close is the screw to the end of the airbrush body, a piece of steel [small file or drill bit] wedge into the hole might back the screw out

[fontgeek]

Redneck, that screw is about 3/4 of the way into the airbrush body, it adjusts the packing seal/needle bearing that sits between the trigger and the paint reservoir trough. So getting to it isn't real easy, you have to go through the back end of the brush, past the trigger adjustment section, past the trigger area, and then you have the now mangled head of the screw.

If you could find a friendly machinest or jeweler, they may have a setup that is able to take it out, however, if you have to pay their normal rates, it may cost you less to buy a new brush.
Airbrush City has this brush on sale at $99 and it includes a hose. If you have to pay hourly rates to your machinest or jeweler, it will be less for the new brush if they have to work more than an hour, and their charge will only be for removing the old piece.

[patoche]

Well

I've gone to find a tool but didn't find one enough thin to enter in my airbrush body.
I've tried with different tools and definitivly can't get this f.... screw. The brass desintegrate under the pressure . So I've decided to desintegrate all the brass , thinking the thread leaving will go away after ,but now i always get brass blocked in the airbrus threading.
The goal now is to remove the brass leaving in the threading. Problem is that threading is situated in the middle of the airbrush and is impossible to catch excepted by airbrush back.
The solution could be to thread it , but how to find the right threader with the right thread ?
Well , it's hard to admit but i have really kill it by myself.
(airbrush city : 160$ including shipping coast )
pat

[patoche]

Well

i removed all the brass with an home made tool ( i've curved a very thin file just on the point), and removed carrefully the brass . Think there is no more inside but i really can't be sure , the hole is too small and too far.
I will order a new screw and will see i can put the new one, it should be OK unless there is brass staying inside or unless i've killed the airbrush body threading
Whatever, don't be as stupid than me, when you clean the full airbrush or change the needle ring : be soft with the tightening and be sure to use the right size screwdriver to remove it
Pat

[redneck]

I am glad that the screw are out,after you buy a new screw may I recommended filing the screw driver tip to fit the screw slot and file the driver tip so the sides are parallel not taper, the taper causes the screw driver to back out of the screw slot, also can you use the needle to placed the screw where it go,placed the needle thru the screw and hold brush body upside down until the screw is in place then turn brush right side up before removing the needle

[patoche]

Well

I have received the new screw with new ring. I 've tried to put it but the screw didn't turn easily. I had to turn with hard pressure on the screwdriver
Think i have killed a little bit the airbrush threading with my screw extraction, Whatever , the screw seems to be in the right place and my airbrush seems to work !!!
I'm already anxious of the day where i will have to remove it again.

pat

[redneck]

glad that gun are back on line and happy painting

[chucktx]

there are left hand drill bits available from local stores....many times an extractor is not needed. the left hand bit will dig in and unscrew many stuborn bolts,ect.....