Greetings,
I've gotten most of my painting done on the Tamiya A3. Started with what I thought was some fairly light preshading.
After the preshade, I sprayed MM acrylic RLM 76 on the underside and fuselage sides. In my neverending struggle to find the right paint mix, I thinned it way out with MM's acrylic thinner. Even at low pressure, it was on the verge of watery, but I was able to build up the color VERY gradually, which I think ultimately served me well in controlling how much of the preshade came through. I think I got it about right.
Next, I moved along to RLM 75 on the wings, fuselage spine and sides. This time, the mix was just too thin and runny, and I was getting sick of messing around trying to find exactly the right proportions. I've recently had great luck mixing Tamiya paint with 91 percent alcohol, but hadn't tried it with the MM acrylics. Slightly desperate and about to quit for the night, I mixed up a bit of the MM with alcohol. Lo and behold, I started getting a nice, smooth spray with no spitting, clogging or running.
I freehanded the 75, but decided to mask the wings and horizontal stabilizers before spraying the RLM 74. I copied the Tamiya template and cut paper masks, holding them a bit off the surface with Silly Putty.
Even with the masks above the surface, I still got a fairly sharp edge on the splinter camo.
I did freehand the fuselage spine and the mottling on the sides. After diving in and spraying the 74, I realized I'd forgotten to mask the canopy, so I hurried up and did a quick tape job, then sprayed the canopy first with RLM 66, then with the RLM 74 I still had mixed.
The painting instructions I've found indicate a fairly light mottle on the sides, so I tried not to overdo it. It's a combination of RLM 74, 75 and a bit of 02. I gotta admit, I've been sweating the mottle painting for months now, anticipating that I'd eventually have to tackle it for the 190s and 109s, but not feeling confident at all in my abilities. No matter how much I practiced on paper or scrap plastic, it never looked quite right and I never felt like I had control over the process. Well, imagine my delight when I hit upon the MM/alcohol combination and I suddenly felt as if I had total control over the airbrush. I know it ain't perfect, but I'll tell ya', for my first shot, I'm pretty darn pleased.
As I've posted previously, I've felt like I've been battling airbrush demons constantly, first with the Paasche Talon, and to some degree with the Iwata HP-CS I got for Christmas. And several people had suggested that the Iwata was great for the broad strokes, but not so good for fine detail work. Well, once I hit the right mix with the paint, I felt like I could do anything with the Iwata. Again, it just seemed like I had total control of the brush, a really nice feeling after so many frustrating battles. I know some paint won't work well with the alcohol mix, but I'm finding that with Tamiya and now MM acrylic, it's a winner.
OK, enough of that. My next challenge with the Iwata will be taking another shot at spraying Future. The one time I tried it with the Paasche, it didn't go well. But I've got a nice smooth surface to start with here, so I may give it another go, after trying it on some scrap, of course.