ABS warping and extrusion issues

[airscapes]

In defense of ABS, it works really well in an enclosure that is kept at 100F while printing and a bed at 110C. I have been using it a LOT for functional parts I design. The higher quality ABS works best, MakerGear sells a USA made rebranded product that is really excellent but $39 a roll plus shipping. The Esun stuff is ok, but not as consistent in diameter.