A
Awins
Guest
How does pressure effect the finish? What will to high or to low a pressure result in?
It depends on a lot of factors. Most airbrushes (meaning those which mix internally) require a certain pressure to properly create the aerosol to spray. How low a pressure will spray at all depends very much on the medium.
I see a lot of people spraying at what seem to me very low pressures and getting an overs pray, almost a splatter, around the line they are spraying. For me higher pressure avoids this and allows fine demarcations to be cleanly painted.
Here are some examples of free hand sprayed camouflage demarcations on Theo Nibel's Fw 190 D-9.
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View attachment 264102
I just took the model out of a cabinet to photograph it, and it could do with a dust
Cheers
Steve
Thank you Steve, the main reason I ask is because my finish is Often dry powdery looking almost a very heavy matt finish if this
makes any sense. Im wondering if it is my pressure or distance that I spray or indeed a combination if the two. Just cant seem to achieve a smooth finish. Im spraying at 20 psi using an Evolution with Tamiya Acrylics. Any thoughts Steve.
That does sound like your paint is drying as or before it hits the surface. This does happen with some fast drying paints, though I am not familiar with Tamiya acrylics. It might be that you need to decrease the distance from which you are spraying, or you might look at addng a retarder to the paint to slow the drying down.
Just to show how different the techniques of different people can be, I spray everything at around 35-40 psi. This includes fine lines and mottle.
1/32 'Natter'
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1/72 Mistel, mottle on Bf 109.
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Cheers
Steve
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