I'm now starting the weathering.
064 was operating in the 1ATF AOR in Phuoc Tuy province, NE of the Mekong Delta, in an area characterised by the Terre Rouge, or red laterite soil.
Vietnam Soil Map:
I've depicted her in October 1969, at the end of the wet season, the beginning of winter. Mud and dust cover the vehicles in many original photos. It helps to build up what the fashion industry calls a "mood board" of photos to create the overall look you're after.
The weathering is in two parts, first, to highlight detail and give depth and contrast, using oils as washes, filters and shading. This process is called rendering, a term taken from art and computing, meaning "
the processing of an outline image using colour and shading to make it appear solid and three-dimensional". Then using oils and pigments, the second part applies the terrain and weather effects.
I begin by grouping the oils into related hues and putting them onto card. After 30 mins or so, the linseed oil will begin to leach out, allowing the oils to dry faster and matt.
A wash is a wet application of thinned oils to bring out detail by highlighting contrast between light and dark. Here, the roadwheel mud channels are darkened. The ridges will then be given a light filter to bring make them stand out.
I'm also using light and dark filters to contrast the surfaces and curves of the roadwheels. There are some notes on selection of hues for filter in the Knowledge Base topic on Weathering (part one). The filters are a dry application. I apply the oil undiluted, in small, fine strokes, then take a clean brush, damp it in thinner, dry it on a paper towel and then blend the colour in. The beauty of oils is their controllability. You can alter the translucence with thinners in order not to compromise the underlying base colour hue, which is important, if you've gone to a lot of trouble to get an historically accurate colour match.
This is a bit stark but will provide a colour basis for the pigments to follow:
You can apply the filters and washes in any order and repeat them until you're satisfied. You can also remove oils if you're not happy.
The aim of this first stage rendering with oils is to bring the model to life by creating an impression of light and shade, to draw the eye into the detail. The second stage applies the impact of environment and use. The purpose is to put the model into its operational context, to give it a history. I make up three pigment mixes, no more, using a variety of pigments appropriate to the geography of the operational area, here the oxidised soils of Vietnam.
Apply the pigment mixes, then fix using either a dedicated pigment fixer or an acrylic thinner. The latter isn't permanent but you can fix the pigments temporarily and then airbrush the permanent fixer in place once you're finished. Because our tanks run, it's more important to fix the pigments than for a static plastic model.
There's always a temptation at this stage to keep going and overdo it. This is where the mood board comes in, giving the overall look and helping decide when enough is enough.
Eleven more to go.
Regards.
Stephen