How can I make solid fake soil? I am looking to make fake soil. I would like the end result to look as close as possible to real soil, but be made up of solid parts that do not create goo, dust or other residue. I have tried coffee with glue but it is not solid enough. What should I use for this?
I presume you are talking about model-building. You can try mixing sawdust and sand with some burnt sienna acrylic. Apply it to your surface while the paint is still wet. When the paint has dried, drybrush it with a lighter brown over it.