help with changing ucs

[Anonymous]

I need help changing the ucs in this part file. The new ucs should be at 23 degrees from the y-axis. You can see the 2 perpendicular lines that I've drawn to define the new ucs. 

[JDMather · Accepted solution]

While we wait for my video on creating a User Coordinate System in Inventor to upload and compile, what is the purpose of this coordinate system?