Glass is a resource used in Astroneer for crafting other items. It appears as a standard material in the recipe system and is listed as an input in multiple module recipes, showing up in several different crafting chains rather than as a standalone utility item.
Its main role is to serve as a component for higher-tier equipment and structures. The available sources confirm that it is used in more than one recipe set, including several modules with multiple outputs, but they do not provide the complete recipe list here. In practice, that makes Glass a material worth stockpiling once you begin building beyond the earliest survival stage.
Because it is a crafting resource, Glass is usually handled like other basic industrial materials: produce it when you need to expand your base, unlock more advanced equipment, or prepare for later-game construction. As with other resources, it is best kept accessible near your printers and storage so it can be pulled into recipes without extra transport work.
