Silverfish cobblestone generator - still possible? As it turns out, yes. - Redstone Discussion and Mechanisms - Minecraft: Java Edition - Minecraft Forum - Minecraft Forum
Piston-Driven Cobblestone Generator (no mining necessary) - Survival Mode - Minecraft: Java Edition - Minecraft Forum - Minecraft Forum
minecraft java edition minecraft redstone - How can I make an automatic cobblestone breaker? - Arqade
How to Make an Infinite Cobblestone Generator in Minecraft
1.6.2 Fastest, cheapest and best cobblestone generator! - Redstone Creations - Redstone Discussion and Mechanisms - Minecraft: Java Edition - Minecraft Forum - Minecraft Forum
Fully automatic cobblestone generator in Vanilla Minecraft : r/redstone