Minecraft wiki entry for Obsidian_farming, associated text: The biggest problem with obsidian mining is the time it takes; even with the best pickaxe and effects, it takes 1.6 seconds to mine a single block. Various methods can be used to break obsidian blocks automatically. In Java Edition, the wither is usually key in these methods as it is capable of breaking obsidian blocks with its attacks. In Bedrock Edition, piglin bartering is the only reliable and stable way of getting a lot of obsidian automatically.[1]