In this guide, you will come to know how to Remove Oxidation from Copper Blocks in Minecraft.
The copper blocks oxidise when left out in Minecraft but as it happens, removing the oxidation is easy. The only item you will need is an axe of any type.
You have to use the axe on oxidised copper, and it will scrape off a layer of oxidation.
You can do this on all types of copper blocks, and it will work on stairs and slabs.