Forum adverts like this one are shown to any user who is not logged in. Join us by filling out a tiny 3 field form and you will get your own, free, dakka user account which gives a good range of benefits to you: No adverts like this in the forums anymore. Times and dates in your local timezone. Full tracking of what you have read so you can skip to your first unread post, easily see what has changed since you last logged in, and easily see what is new at a glance. Email notifications for threads you want to watch closely. Being a part of the oldest wargaming community on the net. If you are already a member then feel free to login now.

OK I know this is another airbrush question but my googlefu has failed me, (mods maybe start an airbrushing section of painting and modelling)
Any way I have just swapped my needle, nozzle and spray cap and now I am getting a split spray pattern with splotches when my trigger is pulled fully back, the parts are all new and the needle is not bent but I'm still having problems.
When the Spray is fine its OK but the further i pull the trigger back the worse it gets.

sounds like either the paint is too thick (comes out in splotches) for the pressure.

Not sure exactly what you mean....can you somehow take a pic of what it looks like if you spray a line down a piece of paper?

We don't really need an airbrush section, we just need people to search before they ask "what airbrush should I buy" as that is about 90% of the traffic....and gets asked weekly.

The next most common thread is "how do I thin my paints" thats about every other week....

This question - a new one - is a welcome sight.....

Will put some artists ink through it in a bit and post a pic of what I mean

Here's what I'm talking about


Automatically Appended Next Post:
That's done with artists Indian ink at 25psi

I don't know if its the same problem but I had this when I first cleaned my airbrush. a blob of dry paint was stuck on one side of the needle and I need to get a little tapered nossle cleaning tool to de-gunk it properly.

Oh the airbrush is a veda WD-180 its a cheap iwata knockoff that had great reviews and was all my budget could afford at the moment.
I have had some good results for my experience with airbrushes with the larger nozzle and needle but wanted to try the smaller size for finer detail work.
Here is my first attempt at plasma weapons with it.

Yeah, it looks like something is disrupting the airflow around the needle....either a piece of gunk or improper seal, or a damaged needle/tip.

I agree with the above. Break it down and clean it again, run your finger nail gently down the needle to feel for any scratches as well.

I had something similar happen once when I forgot to change the nozzle when using a smaller needle.

It may be the parts you are using are incorrect / mismatched, or defective

Put back your regular nozzle, cap and needle and give it a go - if it sprays ok, your problem is likely with the needle\nozzle\cap combo.

Looking at the picture it is definitely a flow issue. If the airbrush you have is an Iwata knock off then I am going to assume it is built somewhat the same way.

This is a diagram of Iwata parts;

http://www.merriartist.com/Iwata_Eclipse_Parts_s/605.htm

IF you look at part number three there should be a similar part on your knock off. IF you look at the this part, on the inside of it will be 3 small holes. These holes are the vents that the air passes through to atomize with the paint and create your pattern. If one of these holes becomes clogged, it will change the angle and appearance of the spray pattern.

The other thing that concerns me a little is the texture of your entire pattern, it is spotty all the way through, this is not normal for ink. Your initial pattern looks like the result of a bent needle, or a needle with a bur, or an improperly sized needle.

If you go back to your same set up, does the problem still exist?

A.

 soitra wrote:
OK I know this is another airbrush question but my googlefu has failed me, (mods maybe start an airbrushing section of painting and modelling)
Any way I have just swapped my needle, nozzle and spray cap and now I am getting a split spray pattern with splotches when my trigger is pulled fully back, the parts are all new and the needle is not bent but I'm still having problems.
When the Spray is fine its OK but the further i pull the trigger back the worse it gets.

Sounds like something blocking the airflow or paint is to thick. If the paint is to thick try thinning it or pulling the needle a little back to allow flow. Sometimes it can be to tight up at the nozzle for thick paint. Also I may recommend a sonic cleaner to clean it to break up small particles of paint that may have dried up in your airbrush.

Good Luck

If it's split I think there might be some paint in the needle.