Round objects not printing round

[zellerda 0]

When I go to print a round object or a round hole in an object the circle is not round it appears as an octogon or decagon rather than perfectly round.  It did not used to do this.  Any ideas as to why?

[geert_2 558]

Could it be that your export to STL is in too low resolution? So the STL-triangles get too big? You need to look at the STL-file in an STL-viewer, or look at how it shows up in Cura.

 

Maybe there could also be too much play in the printer, but before looking into the hardware, be sure to sort out any wrong STL-export settings first.

 

[zellerda 0]

It is showing up in Cura as the 12 sides instead of round but on Autodesk inventor, which is the software we use to create our STL files.  It is round.  

[Smithy 1,146]

Check this thread with a solution: