I have just got back into making plastic scale model aircraft after over 25 years of neglect, but now I'm retired.
I've just completed a 1:72 scale MiG-29 (Farnborough 1988 "Blue 10" - the first time it was displayed in the West, I believe) which I bought back in around 1991 or so! I am unhappy with the all-too-visible painting brush-strokes (used Humbrol enamels; some new, some maybe 10-15 years old which were given to me) and when I bought a new model kit last weekend, the hobby store said I need to thin enamel paint, even if manually brushing. I have never used an airbrush, BTW.
Is there any rule of thumb for dilution percentage of [Humbrol] enamels with [Humbrol] thinners, please? Surely it varies - for instance, gloss/satin/matt enamels appear to be more viscous than metallic enamels. Do you need to thin [Humbrol] enamel primer?
For my new kit (1:72 scale Gulf War RAF Panavia Tornado GR.1) I had to buy Vallejo Model Color acrylic (70.876 brown sand) as there was no enamel (Humbrol or otherwise) in stock. Model paint is hard to get here (it's all imported); stocks are eroded! I've never used acrylic paint; never anything but Humbrol enamels. I'm definitely not claiming any superiority of any brand or medium, etc - it is simply all I've ever used!
I understand it is OK to paint acrylic paint over enamel primer (but not vice-versa?) but is it really necessary to prime bare styrene before top-coating, whether with acrylic or enamel colours?
Do you just shake the Vallejo "eye-dropper" type bottles of acrylic paint, or do you need to stick a thin object through the tiny hole to try to stir it as well. I don't know how effective manual shaking would be... especially when the bottle is new and totally full. Do you have to thin Vallejo acrylics?
Finally - I'm sure it does no harm, but is it worth it to wash a new model's parts in warm soapy water, before commencing assembly at all?
Thanks for any input - there is so much conflicting information about these things...