Today I was painting a locomotive with my airbrush. I opened a fresh bottle of Polly S acrylic Loco Black, poured some into a jar, added some Polly S Acrylic Airbrush Thinner - and the paint instantly turned into sludge. I cleaned up the mess, took some more paint from the same bottle, thinned it with distilled water, and it worked fine.
HUH? Anybody got a clue what just happened?
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Well, as I said in the initial post, I was using the same brand of thinner that was supposed to be for that exact type of paint. Acrylic thinners are all mostly water, but they have various combinations of alcohols and other additives in them according to the specific composition of the paint they are made for.
Had that happen as well Using Poly S with their own thinner. Airbrush clogged instantly and the paint jar looked like a milkshake. Tried a few more times with the same result. Was airbrushing track and switched to Floquil to finish up. Decided to toss the thinner. I still have a few bottles of Building Brown paint for the rails still unpainted on the layout. I prefer the water based paints for a big job in the layout room. I sort of gave up on them after buying a spray both and switched exclusively to Floquil. With their demise I've since started using True Color Paints with good results.
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