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I had some Tamiya X-1, and airbrushed it. I tried getting a good 50/50 ratio between the paint and the thinner as a starting point. When it sprayed, the paint looked pebbly and grainy when I sprayed onto a test piece (too much paint). I added some more thinner, and it was pooling when I was spraying it (too much thinner). I tried to go in between, and what I got was not an even spray, but a mix between the two.
If you are confused (I am as well), it basically sprays like it would when there is too little thinner (pebbly look), but it also pools (too much paint). It sprays pebbly and it pools.
I never experienced something like this. Does anyone know what this means?
Tamiya X-1 Gloss Black
Tamiya X-20A Thinner
20 PSI
2 inches away
Made you Look
I am not a pro but when I spray tamiya paints 35 percent thinner works for me There are alot of variables heat humidity etc... I am getting better at painting working with water bottlles (free substrate) but No one can really give you an exact Ratio It is kinda learning curve. all I can advise is don't use your model to experiment on use plastic silverwear or water bottles to find what works best for you. also what P.S.I. are you spraying, I myself like around 9or 10 for Tamiya seems to spread very nice for me you should experiment and see what works best in your enviroment. 20P.S.I. is pretty harsh for tamiya paint that is pretty much what I spray Vallejo Model Color at and I would reduce that if I could manage the dry tip thing any better. I tend to spray around 6 inches away from my model but that is not a hard and fast rule It just works for me
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20 PSI is too high for a 50/50 mix. I rarely go above 15 for anything other than a thick primer.
I spray at 16 PSI.
If you're getting dry, pebbly at each end of your pass, and pooling in the middle, I suspect you're making a sweeping motion. Further away at each end and closer in the middle. Try to keep the same distance from gun to piece for the entire length of the piece.
If you are using, say a water bottle, spray lengthwise rather than across the bottle standing upright.
MJY65 20 PSI is too high for a 50/50 mix...
20 PSI is too high for a 50/50 mix...
I wouldn't say that that is an absolute. I spray at 20 psi, and I spray Tamiya acrylics thinned 50/50 paint to thinner. I have no problems with those parameters.
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the Baron MJY65 20 PSI is too high for a 50/50 mix... I wouldn't say that that is an absolute. I spray at 20 psi, and I spray Tamiya acrylics thinned 50/50 paint to thinner. I have no problems with those parameters.
You're right. I should have added: IMO. Too many variables for absolutes. Airbrush, needle size, gauge accuracy, etc.
I suspect it has more to do with flow rate and pass execution than exact mix ratio and air pressure. Also what airbrush and tip size is not mentioned. Nor
air temp and humidity.
oldermodelguy I suspect it has more to do with flow rate and pass execution than exact mix ratio and air pressure. Also what airbrush and tip size is not mentioned. Nor air temp and humidity.
I have 0.3 mm nozzle. Side feed.
I wouldn't expect anything too out of the ordinary from that. Your X-1 hasn't thickened up in the bottle by chance has it ? This can happen if it's getting old or if you do a lot of brush painting from the bottle leaving the lid off for extended periods. The solvents evaporate out.
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