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Saturday, September 25, 2010
Giving Up Enamels: Just Around the Corner?
I've posted a fair few times on the contrasting merits of enamels and acrylics, and despite being a lifetime enamel user I find I'm drifting toward acrylics more and more.
They don't go on as silky-smooth, they dry quicker in the airbrush tip, and for sure you need to get used to them, but the benefits really do weigh heavily in their favour. They're far less toxic, they come in larger bottles that have phenomenal shelf-life, there are enough shades around that you can either get a decent match right off the shelf or mix one without much bother, and they're durable enough to survive gentle handling. Their non-toxic nature means they're probably the only option for indoor spraying if you're health-conscious at all (brain cells, we don't need no stinkin' brain cells!), so you can paint through the winter without being well-enough heeled to have a spray booth/ fume hood in your workshop, and that's the majority of us. Also, enamel paint chemically attacks vinyl so if you fancy anything from anime subjects to dinosaurs via movie tie-in figures, acrylics will be your medium of choice.
They've come a long way in the last twenty years, and modern acrylics are seriously competing with traditional enamels. I've done mostly-acrylic paintjobs on my last eight armour kits, with oil-wash weathering over the top, and it's become my standard armour technique, so it may only have been a matter of time before the medium encroached on aircraft.
The Convair XAB-1 that I reviewed in the box in my last post, rather longer ago than I had imagined (apologies for the long delay in posting!) is now finished and submitted to the commissioning magazine, and it turned out to be an all-acrylic paintjob. I had intended to do the natural metal parts in enamel, but fate took a hand: I discovered I had no enamel thinner in stock other than the dirty thinner in the bottom of an old bottle I use to suspend oils for wash detailing, and as I was on a deadline I realised the metallic would have to be acrylic too. Fortunately I had the shades in hand, so I mixed Tamiya X-11 Chrome Silver with XF-16 Flat Aluminium (9:1) and laid it on in several decent coats. The underside white of the bomber was four coats of satin white mixed from X-2 Gloss White and XF-2 Flat White, while the red of the engine inlets, the chromate green of the wheel wells, satin black of the antiglare panel, dark metallic of the flaps and gunmetal of the exhausts were all previously mixed and sprayed in the same acrylic range.
I was impressed by the covering ability (with the exception of the white, and that's the nature of the beast where white is concerned), and the rapid drying which made multiple coats a practical proposition in a modest timeframe. The job became practical and the finish was entirely acceptable. Yes, the natural metal had a certain grain to it that an enamel job probably would not, and in future I will still work in enamels when the environmental conditions are right; but when they are not and there is a model to be finished, the less-toxic medium is now fully up to the job.
I have a Tamiya Fw 190 F-8 underway with an all-acrylic finish. I'll write a review of this excellent kit when she's done, and talk about mixing the RLM paint shades from the basic Tamiya range, an operation which, at time of writing this article, looks both simple and highly accurate (sometimes...).
Cheers, Mike
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