All copper pipes can now oxidize and be waxed!
Don't worry though, you won't lose your items. I made a clever workaround to changing the block a BlockEntity is using, so the block will only change once the inventory of the pipe empties. This way you can't lose any items, and you're safe from potential crashes.
Developer information
Projects on Modrinth are automatically available through a Maven repository for use with JVM build tools such as Gradle.
maven { name = "Modrinth"; url = "https://api.modrinth.com/maven" }
