Quote Originally Posted by bkmartin View Post
I'm having problems with the corners of my test cube being "higher" then the rest of the cube. The corners are not lifting from the glass at all, but it seems extra material is left on the corners or the corners warp up for some reason. Suggestions on what I should be tuning?

PLA, 185 hotend, 65 bed temp, 1.75mm hexagon, Cura, 20 mm/s bottom layer, 80 mm/s other layers, 10 sec minimal layer time, .2mm layer height
Looks to me like you're printing on soft material since the underlying layers aren't cooling fast enough, caused by the combination of a hot print bed, fast print speed, and relatively short layer time. Adding a print cooling fan would be another consideration.