Building a Safe Cobblestone Generator

Shaping the Generator Trench

Your endless supply of stone comes from combining your starter ice block and lava bucket into a cobblestone generator. Clear a four-block-long trench in your dirt, keeping it well away from your tree, saplings, and wooden crafting table so stray fire cannot burn your wood. Dig one extra block straight down on the second space from one end of the trench. This deeper pocket gives the water somewhere to drop downward instead of flowing all the way across into your lava source and turning it into obsidian.

Activating Water and Lava

Take the ice block from your starter chest and place it at the end of the trench closest to the deeper hole. Break the ice block with your hand or a regular pickaxe near light so it melts into a water source. Confirm that the water flows one space forward and stops inside the hole. Next, place your lava bucket at the opposite end of the trench. Where the flowing lava touches the side of the water, cobblestone forms continuously. Stand to the side while mining with your pickaxe, and place a solid backstop block behind the cobblestone spot so mined items pop toward you instead of burning.