Aztek Nozzles for Acrylic Paint.

They are not protected on purposed, as the biggest problem with airbrushing acrylics is their fast drying time which often causes the airbrush tip to clog. The 'open' tips helps minimize this and I have confirmed that the 'regular' nozzles do clog more easily with acrylics.  I use the TAN nozzle for fine spraying acryls and use a retarder/thinner to help minize clogs. My general purpse nozzle is the black one and having use it for 4 years now, never had an issue about damage. I even take out the needle and soak it in windex between use - the only way I can see damaging it is if you dropped the brush right on the needle.

Dear Waikong,

Many thanks for the explanation. Glad to know that this is the way they are supposed to work.

Best regards,

Paulo Roberto 

Is this the difference between the .05mm turquoise tip, compared to the white .50mm tip?
Apparently they both should be able to spray the same amount of paint correct? 

Hi Paulo,

wow, it's been quite a while since this thread was active!  I personally never use the turquoise one, and as you said both should spray the same width. The only difference I see its the the turquoise one has a lip at the tip to protect the needle, this tends make drying acrylic paint more of an issue. So if you use it, you have to thin the paint down more - of course, that's why I just stick to the white one.

Actually, I find that the black tip is the one I use 95% of the time for my 1/48th scale stuff. I can get a thin enough line and a broad enough pattern with that one tip. If I was doing maybe 1/72nd Luftwaffe squiggles I would need a finer tip of doing some 1/32nd plane I would need the white tip more.