Minecraft wiki entry for Tree_farming, associated text: Players can also create farms that automatically place saplings and break logs by either using an auto clicker or holding f3+t in some versions. In 1.13, logs were changed to become stripped logs when right clicked by a player holding an axe of any kind. These types of farms won't give you the raw logs you need for building, but can give you sufficent wood for crafting mass items.