Tamiya XF-18 Issue

[McG]

Every time I spray Tamiya XF-18 I get occasional blobs that appear in the finished paint. 

 

The paint is roughly mixed 2/3 paint to 1/3 XF-20A, and we'll shaken then stirred before use.

 

I've also added a couple of drops of Vallejo flow improver to stop clogging. 

 

Any ideas what is causing this? 

 

Do I need to add more thinner?

[Steve Noble]

I usually mix 50:50 equal paint to thinner as a starting point, then check how it sprays. I'll add more thinner if it's not spraying well enough. 

[McG]

Thanks Steve, I'll try adding some thinner.

[McG]

Thanks to Steve's tip to add more thinner, I have been able to get nice smooth applications of the paint. Just letting it fully dry over night now. 

[dogsbody]

I have only used my airbrush once and have only used Tamiya XF-16 Flat Aluminum. I thinned it about 45 to 65, paint to X20A thinner, with maybe another couple percent of Tamiya Paint Retarder. I sprayed it through a Badger 150 IL, at 12 to 15 psi. 

 

Here it is on my paint mule.

 

 

And on my 1/72 Hurricane.

 

 

 

I didn't have any splatters or tip drying issues.

I haven't sprayed any other Tamiya paint yet, so I can't make any recommendations other than to thin the paint out a bit more.

 

 

 

Chris