Ome some things will bond abs better than others but in the end and depending on the shape of the part abs will lift. Its a force of nature. You can try to control it best you can but if you do manage to get it bonded then you will end up with cracks. If you have a box with tall sides you always want to model some mouse ears on the corners. I never print in pla. Always abs and it can be a pia to control sometimes. I have a trash can full of failed prints from curling. I recently found a filament however that has the best of both worlds of abs and pla. Heat resistance close to abs but ease of printing easier than pla. No warping or curling. My failed prints have dropped to almost zero with it which brings the cost down in line with abs. Goto www.madesolid.com. Its their pet+. Awesome stuff. I still have a half dozen rolls of abs here but when thats gone the pet+ is all im going to use.