How to create your own model mud ?

For many modellers creating scene elements is a significant part of adding extra realism and impact to a layout. Accumulated dirt and mud are a way of life for many outdoor activities, whether it be vehicles, trains or even buildings. Adding similar effects to a layout, diorama or model can add significant visual impact. One of the easiest accumulations to model is mud, which can be created very easily and cheaply and configured to the subject's needs.

Take a small amount of Plaster of Paris and place this in a small cup or similar device where it can easily be mixed. Next use an appropriately coloured pastel stick that can easily be sourced from an art supply or hobby shop. Scrape the pastel stick with a hobby knife into the Plaster of Paris, this will give colour to the mix. Stir the mixture thoroughly to integrate the pastel and plaster. When the appropriate colour has been achieved add a small amount of water to the mix. This will allow the mixture to run. The consistency of the mix can either be thinned or thickened by adding either more water or plaster as required.

When the required consistency has been achieved add a small amount of watered-down PVA glue, this allows the mixture to bond sufficiently to allow the modeller to apply it to the model or layout in clumps if necessary. Varying the amount of PVA applied will allow for different consistency so it's always good to experiment on scrap material to achieve the desired consistency.

This process is extremely versatile as it can be used to mimic other substances. By altering the pastel colour base used and consistency it may be possible to create other substances such as snow or sand. Why not try it out on your next project?