discussion Question

[scottie3158]

Hi all,
I have a question for you more experienced people. What would cause the air brush to stop spraying mid flow, but on releasing the trigger it sprays a small amount.
Any pointers would be very welcome.
Scottie

 

[Steve O]

If the needle chuck nut is tight and not slipping chances are partial nozzle blockages crud or bits of skin etc, not much else i can think of.

Steve.

 

[scottie3158]

Thanks Steve,
I will check that out.

 

[Mr Bowcat]

Agreed, blockage in the nozzle is probably the most likely cause.

 

[scottie3158]

Thanks Bob,

 

[Tim Marlow]

Hi guys, are we sure this isn’t tip drying, with the dried paint block being circumvented when the needle closes and moves the tip forwards? Happens to me every time I use acrylics through an airbrush....what paint are you using Scottie?
Cheers
Tim

 

[scottie3158]

Hi Tim,
I use Vallejo acrylics most of the time. when I mix it is either to thick or comes out in large dropplets

 

[Guest]

Hi Tim,
I use Vallejo acrylics most of the time. when I mix it is either to thick or comes out in large dropplets

Paul.
I had the same problem , got some Vallejo retarder from John at the shop.
I just add a couple of drops into the paint as per the instructions, mix and pour into the paint pot on the ab. Seems to have worked , even in this heat. Before I would have to clean the needle and the head. It would always be as Tim has said, a lump of crud would appear when I pushed the point of tool through the nozzle.
John.

 

[SimonT]

My solution to VJ spraying problems was to go back to Tamiya for spraying and just keep the VJ for brush - worked a treat :smiling:

 

[rtfoe]

My solution to VJ spraying problems was to go back to Tamiya for spraying and just keep the VJ for brush - worked a treat :smiling:

Yup that worked for me as well.

Cheers,
Richard

 

[Tim Marlow]

Make that three...Tamiya with Mr Colour levelling thinners, match made in heaven, sprays like silk....I’ve tried several brands of acrylic and had the same issue with all of them...need a good mask though.
Cheers
Tim

 

[Jim R]

Hi Scottie
Another possibility is that the needle is slightly bent near the tip. Take out the needle and roll it on a flat surface and watch the tip. You will easily notice if the point is bent.
Jim

 

[Guest]

Just bash it against the bench!:smiling3: (My answer to everything).

 

[Si Benson]

Just bash it against the bench!:smiling3: (My answer to everything).

That’s one of my tricks....I call it the ‘engineers tap’. Sometimes you’ll need an adjustment stick too!!
View attachment 310933


Si

 

[scottie3158]

Thanks all,

For the replies. I'm not sure if the tool fine adjustment is big enough.