Tools and materials
▶ A shallow box with a lid: a Tupperware container works well as the lid will protect your model when not in use. The one used here measures 29x21.5cm.
▶ Bottle of liquid latex: available from art shops and online stores. Approximately 250ml of latex is enough for this size of container
▶ White baking flour though: any kind of flour will do.
▶ Two mixing bowls and a spoon: glass or plastic bowls are fine as liquid latex peels off easily once dried.
▶ Good reference photo: chose one that shows the entire crater and which has well-defined, visible shadows.