What are the advantages of applying a pin wash

The term 'Pin Wash' is a shortening of pinpoint wash. Pin washes are generally applied to very specific parts of a model to enhance individual surface details such as recessed panel lines, access plates or hatches and doorways. In this regard, it is different from an overall wash which is applied to the whole model to simulate the accumulation of grime and dirt over time.

A pin wash is generally applied when the overall painting process has been completed.  In order to prepare the surface for a pin wash, it is best to give the model a coat of Clear or other similar transparent gloss varnishes. The gloss finish ensures that it is more difficult for the pin wash to adhere to the smooth surface and as such it tends to run and contour quite well around prominent surface details leaving subtle but distinct lines or localised areas of shade indicating a build-up of dirt in recessed areas.

Pre-prepared washes are available in a variety of shades, each of which can be used to simulate a build-up of specific deposits such as soot, sand, oil or rust. As such a number of manufacturers such as Vallejo and Humbrol have produced washes to help model a distinct effect.

It is relatively easy to create a wash for those looking for a bespoke shade. Black oil paint mixed with a small amount of brown when thinned with turpentine can very effectively create a wash simulating accumulated soot or dirt. When the mix of colours is reversed it can be effective at simulating accumulated rust. If applied carefully with a very fine brush the effect can be very striking, immediately bringing a perception of 'depth' to surface details. Excess wash can easily be cleaned away with a small amount of Turpentine on a cotton bud or similar implement before it dries meaning this is a very forgiving technique.

A pin wash is a great way to bring a painted model to life, why not give it a go!