Iwata single action clogging constantly :o(


Paul T

This f*#king airbrush, keeps clogging, I thin the paint with thinner then windex then water, no good, take the tip out put it in airbrush cleaner push the needle through it a few times coat the moving part in machine oil clean it again and put it all back together. Still no luck, sprays for a few seconds and then stops, only air comes out no matter how thin the paint is, it won't even spray water no matter how clean it is. There's like only three parts to clean the needle, tip and button that why i got a single action, its so simple, how the eff can this be happening? Sooooooo frustrating :mad-new:
Relax man. Check for a pin hole in the paint jar lid. If theres no hole or its clogged then no air will get in to allow the paint to be siphoned. Also check to make sure your paint nozzle is adjusted correctly. I am assuming that it is adjustable of course. My Badger 350 is this way. Also make sure you have enough air pressure, 40 psi or more for siphon feed. Next what brand of paint are you using? If its not airbrush paint, it. may never go through your nozzle no matter what, many craft paints are not ground fine enough to fit in an airbrush nozzle without seriously over reducing 20 :1 reducer to paint.
Thanks, its an Iwata HP-M1 single action gravity feed, I have had a few cheap airbrushes that always gave me grief so I thought I'll spend the money and get a decent one. Up until now its has been a pretty good brush. You wind the needle in and out at the back to adjust flow, it has numbers on it, the finest 1 and 2 have never really worked, but that's okay, sort of, I can get by. I always have my pressure up to 60psi, I thought this prevented clogging. Im using airbrush specific paint, Model Air comes in dropper bottles, and I even thin this as it looks a bit thick. The brush is pretty much useless now no matter how much I clean it put it back together it sprays for a few seconds then quits. It couldn't be clogged after a few seconds from clean, its seems to be defying physics. I'm spraying red are there some mysterious properties in red that cause this to happen? I was spraying black and grey primer last night with no problem....
Maybe some of the previous material is still in the nozzle? This happens a lot with gravity feed dual action brushes, you can't see the paint, but it will not spray properly, then soak the nozzle and find the gunk.

I am not familiar with the Iwata single action. I will have to take a look into it and get back to you.

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Being as it is a .3 mm nozzle. I would stick to my previous idea of gunk in the nozzle. Maybe remove the nozzle and let it soak in some alcohol and then gently prod around the inside of the needle with a toothpick or something similar. Be very careful not to damage the nozzle.

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Thanks again :02.47-tranquillity: is the "nozzle" the tip that screws on with the tiny little spanner/wrench? or the little part that screws on after the tip, then the tip protector after that.
the nozzle is the last pointy thing that the paint comes out of. I find that if i whittle the toothpick down a little, and soak it in cleaner, it works well to clean inside the nozzle.
Paul if you have the I strict ions for the brush, there's a parts diagram in there, and a small trouble shooting guide. Will also be useful should you need to order spare parts.

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You using waterbournes?
I've had a couple of single actions over the years, Paacshe H, Aztec single action, that I bought for reasons I can't seem to remember.

Bottom line: tip dry will always get in the way of a single action being capable of spraying anything up close or fast drying.
The needle is stationary and won't shuck the paint away with opening/closing movement.
They are fine for blowing in a background and stuff like that where there is lots of color flowing over the needle to strip it of drying paint, but that's the limit.
They are capable of spraying slow drying brushing enamels and stuff like that without tip dry, but they are not good mediums anyway.
Sorry to deliver the news dude, these brushes are intended to hobby stuff like model railways and the like, or for very basic ABing.
Do yourself a favor and grab yourself an entry level dual action - there are some real good ones for about 130 bucks.
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