How do you change a parts orientation via a script?

The rotation of a part is largely dependent on the use of CFrames. CFrame refers to both the position and orientation of the part. All of the information you will need on CFrames can be found here.

Specifically the CFrame.Angles section in that wiki is what is important towards rotation.

There is also a section on that page on rotating bricks farther down (You can jump straight to it using Ctrl + F).

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