Hi Steve, Thanks for these beautiful examples you have posted. I take it that the models are all at least 1/48. I am truly incredulous that anyone could do these very crisply at 1/72, especially the Natter, but I am willing to be convinced. In any case very few people in my experience are going to have the ability to produce these schemes even at 1/48. Photography, as I have mentioned obscures a lot of problems that become apparent when viewing in person. The Macchi, Thunderbolt and K-4 in my experience could all be done with careful construction of masks, with the K-4 being the easiest. For the Macchi, rings can readily be traced out on paper and carefully torn to leave a gap of desired width. The inner part of the ring might have to be connected to the outer part with glued segments of wire or thin strips of tape. Small touch ups with brush or pastel pencil can be done later. The basic shapes of the dark green of the P 47 could be applied through a mask with edges counter shaded with very thin coats of the gray later with overspray controlled with other hand held masks or by freehand. The winter camo of the 190 would probably be best done freehand I agree, but one could easily make a collection of stripes of various configurations with masks and spray these a few at a time until the desired effect is achieved. The picture here looks to be of a 1/72 model and is not detailed enough to really see how well atomised the stripes actually are. When masks are used you can use a higher spray pressure which facilitates paint atomisation. With this technique most all the tedium goes into creating the masks. However, as I must concede, good luck creating masks for one of those serpentine patterns!
Regards,
Selrach