Tool Head Swapper
This mod is pretty simple. It allows you to swap heads of pickaxes, axes, shovels and other tools for other materials.
For example, you can take a stone pickaxe and exchange its head for an iron one just by placing the pickaxe and an iron ingot into a crafting grid. This will make the tool keep the enchantments it has on it and by default, the durability from the old tool will be carried over to the new one as well, meaning that if you make a diamond pickaxe from an iron one that has 200 durability left, the diamond one will also have 200 durability left.
This works for all vanilla and modded tools by default.
Changing durability behavior and blacklisting items can be done via the config file.
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