Stage 1: Sand + Water → Wet Sand
The documented entrance is Sand contacting Water to create Wet Sand. The collected Sand source specifies 1 Sand plus 1 Water producing 2 Wet Sand; this is the input to the first processing stage.
Stage 2: Shaker and Gold collection
The progression then moves Wet Sand through a Shaker and sends Gold to a Collector. Shaker unlock placement and exact downstream ratios should follow the official Research and material pages; unsupported blueprint coordinates are 待确认.
Later modules
The chain can expand into burning a processing byproduct, feeding Burnt Residue to a Kinetic Press, plant production, advanced filtering and logistics. Treat these as connected modules rather than one official building called Processing Plant.
Why modular design matters
Steam factory discussions show that players need troubleshooting and flexible production layouts, not one universal blueprint. Leave space for filters, residue handling and future logistics upgrades as the factory grows.