Multi-cavity vacuum casting lets you produce multiple parts in a single pour using one silicone mold — cutting unit cost by 30–50% and delivering batches in 1–2 days. Ideal for 50–500 piece trial runs, it outperforms single-cavity casting in efficiency and consistency without the lead time or expense of steel tooling. This guide covers the four-stage workflow, mold design rules, PU material options, and a side-by-side comparison with 3D printing and CNC to help you choose the