Scale models are intended to portray the original version of a subject, be it a car, tank, plane, train or ship. Rarely will you see a real tank or ship without rust or chipped paint. Cars and planes have stains from exhaust or fuel spills. Models can be finished to exhibit the wear and tear of the real thing. The process of making a model look old and used is called weathering. The most common methods of weathering a completed kit are dry brushing and washes, two easy painting techniques.

Both of these techniques are used after the piece or model has been painted and had decals applied. It is also a good idea to consider the paint types used. Use an acrylic or water based paint for weathering. If the finished model was painted in a water based paint already, make sure it is well cured before weathering. An enamel or solvent based paint used to finish the model kit will not be harmed by using the water based paint in weathering.

The first technique, dry brushing, is applied using a paint brush with moderately stiff short bristles. Dip the brush in paint then dab most of the paint off on a rag or card. Only trace amounts of paint should be left on the brush. Quickly and lightly flick the brush tips over the raised feature of the kit to highlight the detail.

» Read more: Finishing Model Kits With Two Simple Painting Techniques