I am new to this and just started my first model. I sprayed a coat of Vallejo Acrylic/Poly urethane primer 73.601 with an Iwata HP-C gun. I cleaned it right away with windex, but the paint completely coagulated into lumps. What happened?
I took it apart and have tried distilled water, nail polish remover and varsol but none completely remove the gunk expecially at the point where the neede pokes through. Help!

I can tell you this; Vallejo has a Airbrush Cleaner #099. It has NEVER failed me yet. I too use Windex and Laquer Thinnner with no issues.
If you have some Laquer Thinner; I would try to take apart, pull the needle out. (very careful ) and reclean. Blow some Laquer through with out the needle init. Wipe needle clean.
I would also invest in Vallejo Airbrush Cleaner & Vallejo AIR paints, and hopefully not the Model Color in your airbrush.

Good Luck

what did you use to thin the paint ??

using an alcohol based thinner will affect the paint and cause it to become gluggy

apart from that i have never heard of windex making the paint go gluggy

I didn't thin it, just sprayed straight from the bottle. By the way is this product an acrylic, alkyd or some hybrid?

Greetings,

I just switched over to Vallejo primer and paints. My first attempt was with the primer. I found that it sprayed great from my Iwata HP-C straight from the bottle. It did seem to like a higher pressure setting though, around 30 psi. I first tried cleaning my brush with windex but found that it wasn't strong enough as a cleaner so I used laquer thiner. I more recently bought the Vallejo air brush cleaner and found that it works great.

Be patient, seems like every paint has a little bit of a learning curve but if stick with it and give it a real try, you will be happy with the end result. BTW, there are a lot of places to seek info about Vallejo on the web. Spend a little time brousing and you will get more than anough info.

Hope this helps,

cbreeze

Your Hiwata ab has seals made in teflon?

If yes you can wash your tool with lacquer thinner. There's nothing more effective than this, but it can damage the rubber seals (not the teflon ones)

If unluckily your seals are made in rubber you have to wash your AB with a STRONG home degreaser

Anyway, don't worry. Paints don't grip on chrome metal, so you can surely wash your ab

cheers

I want to echo the concern about the material your seals are made of. If this is not an issue, and all else fails, try using ALCLAD II Laquer Thinner. This stuff is very strong so please be carefull. Also, if you have not yet tried "back flushing" your airbrush, I would recomend it. Simply load a small amount of cleaner into your A.B. Next, use a tissue to hold and obstruct the tip of your airbrush and pull the triger. You should see bublung of the cleaner in the AB caused by the back flow. This is a great way to disturb anything that may be obstructing air flow.

The Vallejo Primers, in white, grey or black are marked Polyuerethane.

I use Medea a/b cleaner as erm... thinner and.... cleaner.


Avoid cellulose/lacquer thinners, why start adding problems?

This primer likes a higher pressure to lay on & I thin with a tiny amount of the Medea a/b cleaner, It goes on well, is tougher than their grey primer in the 17ml bottles.

As ever practice,