Cross-hatching — brushing first in one direction, then perpendicular to it—is helpful in minimizing brush marks. Construction of the upper hull commences with the fitting of the vision hatches and periscopes to the inside of the hull. Hermes Kelly Wallet Black. If the paint is too thin, let it sit a few minutes to thicken by evaporation; if it is too thick, add a little thinner. To build them all, is a monumental task; if you could manage one a month, you have to be looking at an 18 month project. Hermes Kelly Wallet Black. During 1940 it was decreed that all naval aircraft would be camouflaged on the upper surfaces in the Temperate Sea Scheme, and these colours were presumably applied to these Hurricanes. The small vents on each side just above the exhaust nozzle are incorrect on the Tamiya kits.