(1.20.1) RF Tools Builder is using the space chamber with the copy command with preview on to duplicate blocks.

[ZephyrWindSpirit]

This was found via Reddit:

Issue description: Build a space chamber any size but only one high. (Height doesn't matter but more that 1 is unnecessary) Set the RFTools Builder to copy and USE THE PREVIEW (red circle). This is what makes this possible. Place all necessary items in a chest/barrel above the builder. Since I am using a 5x5x1 space chamber I need 25 blocks. Once powered the builder will place a second row on top of the first one. But only use the first 25 blocks. All of them can be mined normally. Since I place 26 in the chest, only one remains. Steps to reproduce:

Versions:

• Minecraft: 1.20.1
• Forge: 47.1.3
• CompatLayer (only if on Minecraft 1.10 or 1.11): n/a
• McJtyLib: mcjtylib-1.20-8.0.3
• RFTools: rftoolsbuilder-1.20-6.0.1

Possibly incompatible mods and versions: n/a

Relevant logs, if any: Nope, we were made aware via reddit. https://www.reddit.com/r/allthemods/comments/17y7ak9/found_a_funny_way_to_duplicate_any_block_in_atm9

[McJty]

I can reproduce. I will investigate

[McJty]

Fixed in 6.0.2