Answered What causes this shift in the part dimensions?

Here’s the setup: Robo R1 plus. Filament is 1.75mm neon yellow PLA with a temp range spec of 215-225. Part was printed at 220 with bed temp of 65.

All angles were supposed to be 90 degrees, so the acute angle shown on the print was not expected. It’s supposed to look like a stack of discs of equal thickness, but the second stack from the bottom appears to have shifted in the x-direction during printing, but only on that one section. Any suggestions would be welcome.

 

Thanks for the quick response. Tightened the X axis belt and will try printing the part again.