I have used the Neo and I am not impressed with that as a masking fluid There are better out there.
I also have the full range of oil brushers. They are just an easy mess free way of using oil paint for weathering. One use for these is ‘oil dotting’ in which you dot your painted surface with various shades of oil paint and then use a brush dampened with white spirit to wipe over the surface gradually spreading the oil and removing surplus until you get the stained and variates finish you want.
Oils are also useful for creating a wood effect. Spray a surface with a tan or light brown shade and, when fully dry and cured, spread oil paint on the surface. Then before it dries use a brush and with a squiggly motion create the effect of wood grain.
The big disadvantage of oils is that they take ages to dry and cure off, days and days.
Below is an example of oil dotting on the inner wings of an ICM 1/32 I-16. This was an aircraft made partially of wood and I wanted to give the impression of wear on the inner wings where pilots and maintenance crew walked. I used various brown and sand shades. Worth noting that I also used black basing, pre and post shading, panel line washes and on metal areas Uschi Metal powders for chipping.
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