Ultimaker 2 Print Settings
ABS: because of contraction due to cooling, ABS tends to lift away from the glass build plate. This is worse for square corners; round objects rarely lift. In Cura, specify a raft around your object. This way, the raft will (possibly) lift but your object may stay flat. When the build-plate is still cool, paint a thin layer of ABS paint (glass jar) onto the clean glass build plate. The dried ABS paint will further anchor your object to the build plate. Recommended settings are ......