CURA curving the lines

[rdh8 0]

Take a look at the attached screen shot.

Did Cura actually print the lines curved to finish the print?

I can not tell looking at the print.

But it seems the slicer did, I just don't know if my printer can move with that much precision.

 

[GregValiant 1,112]

There are three lines there (down, over, up).  It is likely that your printer can make the moves. 

 

My Ender's X and Y are 80 steps/1mm so 1mm/80steps would be .0125mm/step.  That would be the smallest movement it can achieve in X and Y.