Sorry I cant give credit to originator. Two different places are claiming that two different people have stated they discovered dupe glitch. Anyway, Works for Bedrock, Java, Server, & Realms too!!!
Have fun until it gets patched.
Items needed:
2 sticky pistons
1 slime block
1 lever
5 repeaters
4 red stone dust
7 building blocks
1 temporary block
Still Currently working on V1.21.94 as of 8/3/25.
