Hi,

I'm having an issue when I'm printing with ABS. The infill on my prints seem to cool slower than the outlines of my prints and therefore shrink less. This means that when my print head goes back over of the next layer it's grinding over the print which I'm worried will damage my machine. It also breaks the prints off the print bed if the item is too tall.

Has anyone else had this issue and could suggest a solution?

Im using a Da Vinci Duo 2.0 with Repetier firmware, prints sliced with Slic3r at 20% infill.