Mojang recently revealed that the copper golem will soon arrive in Minecraft in the fall game drop. This cute creature was once a mob vote contender against glare and allay back in 2021. Though it lost the mob vote to allay, it is now arriving as a permanent feature. This mob has unique mechanics that allow it to automatically sort items in a world.
Here is an in-depth dive into how copper golems work in Minecraft.
How copper golems work in Minecraft

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First, when players spawn a copper golem, it will always spawn with its own copper chest. This copper chest will be one of the items the new mob will be able to interact with.
When it first spawns, it will keep checking whether something is in the copper chest every once in a while. If players craft even more copper chests and place them around the area, the copper golem will visit these other chests and check for any items in them. If every copper chest is empty, the golem will simply idle or wander around for seven seconds before opening copper chests and checking again.
If the copper chest is holding an item, the copper golem will pick that item in stacks of 16 and then start finding a regular chest where it can place that item. For example, if the copper chests are holding a 64-unit stack of planks, they can only carry 16 planks at a time and transfer them. This means that the mob will do several rounds to successfully shift the entire 64-unit stack.

If a regular chest does not have the item that matches the item a copper golem is holding and is filled with other items, it will simply place the item in a random regular chest that either has that item or is empty.
The animation of the copper golem opening and closing the chest takes about 3 seconds, which is quite fun to watch since it makes the golem and its process a lot livelier.
It is worth noting that a copper golem's chest-finding range is 32 blocks horizontally and eight blocks vertically.
Another major detail to note is that copper golems cannot interact with other kinds of storage blocks like trapped chests, ender chests, barrels, and shulker boxes. It can only interact with copper and regular chests.
Similar to any other copper block, copper golems will also go through oxidation, which means they can also turn from orange to green. In copper golems, this process starts after around seven hours.
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