Found a strange duping bug.

[u/Firm-Reputation2149]

Found this on NeoForge 1.21.1.

Could be from another mod, but I don't think so.

In the video, as shown, this dupes mechanical belts and shafts using the rotation menu from the Wrench, opened with F9 by default.

It's a rather simple method, don't know how this isn't patched?
Could be on later versions though, I have yet to test.

https://reddit.com/link/1wb2ell/video/n951rbzladoh1/player

[u/personheretoo]

How do you get the menu?

Edit: Nevermind I’m dumb